I've skipped most of that path to Zora's - I managed to climb and mostly bypass it all. That was the first time I've started to hate the way climbing was implemented in game.

It's a fun mechanic y'all.

Especially when you add thunder to the mix - what's better than throwing a metal weapon to a bokoblin, have then pick it up, and then watch it get struck by lightning?

I like dynamic weather in games, especially when they provide gameplay opportunities.

It never bothered me and I always knew it was coming thanks to the "weather app" on Link's cell phone.

I like the rain as well as the weapon breaking aspect.

Both are subtle ways of making the player explore the game more.

Going somewhere in a game. So easy to beeline it there. It starts raining in BotW and you may find you have to alter your route cause you can't climb over something you were planning to. On this alternate route you see something interesting and explore that. It helps one explore the world more. Just as breakable weapons helps one explore the many options of weapons out there.

The way I played the game, I did a lot of exploring and Korok seed hunting, so I found myself climbing much more than the average player. I didn't like how you were allowed to eat food while climbing (which I figured out mid-way through my first play-through). The idea that certain cliffs required a bigger stamina bar to climb was appealing to me, and was how I thought the game worked early on, but with food, you can traverse any cliff.

I think food should have had a cooldown timer on it to prevent eating too often, but given how long this game was in development, perhaps they considered this idea and decided that making players to wait to get a buff they needed was counterproductive.

Circling back to the topic, as the OP explained, rain does a lot of different things, and slippage is just one of them. I would say that I like the rain in BotW, but I think the slippage could have been handled differently (maybe just use more stamina instead of slowing you down). Wasn't a major issue, though, in my opinion.

I dunno, is it? All the negative aspects mentioned in this post completely overshadow the positives. I personally was not a fan of it and wouldnt mind if they get rid of it for the sequel or at least hinder its influence/frequency.

It is almost like rain in BotW has its own physics engine.

It was fine, but I wish we could have acquired some kind of rain gloves after Zora's domain.

In my opinion people who complain about having to stop and wait until the rain is gone don't understand the game. If you are too stubborn to think of another path then that's clearly on you and not the games' fault and you shouldn't complain about it because there are always either different solutions or alternate routes. Sitting there and waiting like a spoiled kid at the supermarket whose mama refused to buy candy won't get you anywhere. Of course you won't enjoy the game that way, that's not rocket science. 

Okay, let's digress a little bit, shall we. Most of the times the same people complain about the weapon durability because they want to find the BESTEST and STRONGEST weapons and be able to keep those FOREVER. Why is that? Well, if you ask me, that's because some people don't like to deal with uncertainty. They always want to deal the most amount of damage so that the mean baddies are gone quickly and without much harm so these people can keep walking through the park without having to fear much challenge and threats. Uncertainty about having the best equipment in order to be prepared for anything that may ever cross your character, no matter how improbable, is a sign of weakness in my eyes. Hate me, I don't mind.

To think about how you approach certain enemies is much more engaging than just hit it with your strongest weapon and be good (aka almost any rpg). And to think about how you reach a desired location is also an essential part of the game. This is not a game about finding the quickest route, it's about exploration and adaptation. Again, if you can't adapt to new situations when the game gives you tons of opportunities, it's on you.

Also nitpicking about the rain is stupid because why stop here? Let's also complain about heat, cold and thunder, too! Let's get rid of the entire weather system because surely there is this one teeny tiny chance that you stumble in a situation where you don't have the right equipment to face one of these environmental circumstances, booooo! That's bad! Cut it altogether! Or even better! Make everything optional, right?

Weapons breaking? No, it makes me a weakling. -> optional
Cooking? Nah, hate that - optional.
Guardians? They keep lasertagging my whimpy ass -> optional.
Boss fights? I'm too afraid of challenges -> optional.
Drowning in puddles? Well, not anymore! -> optional. 
Blood moon? No no no, dead enemies must stay dead -> optional.
Slipping on rocks? That's what we're even talking about, dammit! -> optional a thousand times, yo!
The entire Gerudo area? I don't like deserts -> optional.
Lynels? My whimpy ass can't handle them -> optional.
Princess Zelda? Her design in other games was nicer -> optional.

So more options are good, right? Right?! Except they rip the entire soul outta this game. So stop complaining and find your alternate route, y'all.

I didn't miss the point, you just made a really poor comparison.  Removing rain and removing enemies are not even remotely the same thing.  Also, I never said you couldn't disable enemies if you want that.  I certainly have no problem with it.

If this game were on PC and had mod support, there would already be a mod to remove the rain and it would likely have hundreds of thousands of downloads and tens of thousands of upvotes.  That's how it is with other games and, no, it doesn't break them.  People play the games and they adjust it the way they want and they enjoy the game more.  I don't know why that bothers you.  People modify games to their taste and it gives them a more enjoyable experience.  

I mean, what you are arguing against is literally happening with other games and people absolutely love the freedom.  Skyrim has well over 50,000 mods, some of which completely revamp systems and game-play elements, and no one is upset because thousands of people aren't playing "the way the developers intended."

Your argument has already been reduced to ruins many times over by the fact that modding is growing in popularity and support by leaps and bounds and no one is complaining about it.