While of course it is nice to see gameplay for games coming out in the future I get the feeling some companies nowadays are showing a little too much. Look at FF XV for instance. I'm pretty sure we've already seen half of that game with the all the gameplay coming out at literally every event. This is why I only watched about 10 minutes of Zelda's gameplay.

Is this just me? What do you guys think?

I definitely agree, which is why I only allowed myself to watch the Zelda trailer and ignored everything else they showed about the game at E3. The internet doesn't help though, so I put a spoiler blocker addon on my browser =P

I agree with your point regarding FFXV, that's why I stopped watching new videos. They already showed a lot and I don't want to spoil the great things about the game before I play it. Regarding Zelda, I don't think they showed too much because everything we saw was set in a small portion of the game, unlike FFXV which we already seen gameplay from different parts of it.

But anyway, I think that's more of some isolated cases here and there, not a trend overall.

They do. I agree.

But it's up to us to have self control and not watch it.

I hope you realize the game's going to have a lot of battles, and a lot of them are going to be similar to each other. And a lot of that is going to be side quests and other optional content. I think it's valid to say you've seen half the game if you've seen half of the main plot and 'enough' gameplay. That said, 'half' is probably an exaggeration here, but that 200 hour comment is almost completely irrelevant in this context.

at least gameplay doesn't lie

I think because most of the popular games focus on cinematics, they fall into the same position that alot of movies do when they advertise. They show the most interesting parts off and by the time you've played the game there's nothing really surprising about it.

Thats basically me. I will keep on watching if Im still in a NO or in a MAYBE of buying it. Or  theres like new info which won't really spoil the fun of the game. 

Im sure these gameplay videos are persuading people to buy the game. There will still be people who just needs more to persuade them. 

you dont have to watch it

The question is: "Are we watching too much of games nowadays?"

I am trying to avoid any clips from games i'm excited about since Uncharted 3 where they ruined the experience by revealing most of the important setpieces beforehand.