I'm just in the mood for playing this particular mix of strategy/turn-based stuff now. I'm not too much of a completionist, just enjoying myself. My backlog will probably remain mostly untouched now that I think about it. Too many games, too little time.
Regardless, I'll probably stop playing XCOM for a while if I don't win on my next save (the rng is getting just too bad for my taste right now).
Like TotalBiscuit used to say, games just need to be compelling for the player. If you're in the mood for a different experience (or simply don't want to deal with some mechanics), there's nothing wrong with cheating or modding your game. Make your own fun!