I just started playing this and got pretty engrossed pretty quickly (I like the QTE stuff, I like the mystery, the exploration...) but I read a lot of comments about how it falls apart in the last third. Can anyone, without spoilers if you please, tell me if this game is worth seeing through to the end at least once if not more? I already see a lot of ways the plot could go differently, though I doubt it changes all THAT much.

I'm probably 3/4 of the way through and still like the story. I wish I could throw all the QTE's out the window, though. 
 
I'm used to crazy ass complicated stories, though.

Just play it, it comes down to personal liking. I liked the last third (minus the god awful ending) it is just something you have to decide for yourself.

 Yea its worth finishing, its just there is one scene where everything just stops making any sense whatsoever, I mean it goes off the deep end HARDCORE but its still a fun game.
 
Edit: I feel like I have to say more about that scene no spoilers but it seriously is one of the few actual WTF moments in my LIFE not gaming but LIFE, what was happening before this "scene" was pretty fucking crazy but I could deal with it, then its like someone else picked up the game and just went fucking Batshit Crazy with the story its worth the play JUST to see it all fall apart.

I lost interest about 1/3 of the way through

Finish it, the only thing I didn't like about the last part was some of the QTEs got insane. If you aren't good at those it might suck, but the story wasn't bad.

I don't really know what scene anyone is talking about. I personally thought it stayed strong and mostly comprehensible throughout, except for those infuriating stealth sequences.

I played through the game and after the stupid garbage you have to go through, there is no way I can ever play that game again. Such dumbass ideas are brought up in that game that it'll make you think if the writers were serious or not.

Definitely worth finishing. The game itself is great just the story kinda falls apart near the end but it isn't so bad that you should stop playing. Not by a longshot.

It just pulls a "where the hell did this come from?!" thing. But I didn't really mind. I guess I'm weird.