Those 2 you mentioned are two of the best ever yes but most remasters were excellent games.  God of war 3 won a few goty awards and was nominated for many. Others I can think of like saints row,  metro redux,  sleeping dogs,  payday 2, the walking dead,  dmc,  gravity rush,  resident evil,  tomb raider,  dark souls 2, borderlands,  tearaway etc are top class.  

Those games are excellent and worthy of remasters.  It's not like shit games are getting the upgrade.  

Good: They can bring new life into an older game and let a newer generation experience something old but with a fresh coat of paint

Bad: I don't really see the reason that we need remasters of recent games, despite how good that game is (example being The Last of Us). It feels unnecessary other than to fill another console's library. Other than that small nitpick I don't have much of a problem with them.

If I wanted old games, I could do so on a PS3. Also, if the PS4 had backwards compatibility this wouldn't even be a thing.

I love remasters, because they give me a chance to replay games that I missed.

I had no console at the end of last generation, so "definitive" editions of Tomb Raider, GTA, and DMC are great for me.

I have the Sly collection on Vita and am loving the chance to relive memories. Once I've finished it, I'll be picking up the Ratchet and God of War collections, and I'm seriously bummed out that the Jak collection was in such a bad state, and it's almost guaranteed that it'll never be patched.

People who say they're a waste of resources don't know what they're talking about. It's up to the publishers to decide where the resources are spent, and, usually, they have a good idea on where to spend them. Hell, from what it looks like, remasters are one of the best uses of resources out there, because they make a lot of profits while appealing to the hardcore fanbases. A lot of games these days are either for "the filthy casuals" or fail to make the money that the publishers were expecting.

People would be surprised how many snes/megadrive games were nes/ms games first.

They can be good because it gives people who didn't have a chance to play the game before, a chance to play now. It can also be a chance to bring a classic into modern times with new features and graphics.

it can be bad because if you already played that or have no interest, it means less to play on your platform.

Check Mate.

All of these original titles are taking over my Remasterstation!!!! ffs videogame industry, stop developing original content, please!!!

The reasoning behind releasing a remastered game is rather simple. Game developers are all working on their own PS4 engine for their new games and need a way to sort of test out their engine. By taking a game that they made on a previous console helps accelerate the development of their PS4 engine to see what it is fully capable of.