Well I just got the first ending in Nier Automata after forcing myself to carry on with it. I did like it more as I got towards the end and overall I think its a good game.I'd really say go for the rest but if you're just forcing yourself through it then you might be better of not continuing. That being said I think you haven't seen the best parts of the game yet.
I don't know if I want to play through it again to get the different endings. I'm curious but I don't really enjoy playing it that much.
If you'd asked me to rate it when I was halfway through and really not wanting to carry on, I would have given it a 5 or 6/10 but from what I've seen now I think its about a 7.5/10 for me.