Amen to that, Matt. I'm the same way. On the rare occasion I look at the achievements, I'll simply scan them to see if there's some interesting challenge tucked away in there. If so, I might pursue it, but otherwise once I feel like I'm done with a game, I'm done.
I like getting 100% of the stuff, when that's a thing to do and I like the game, but even then it's usually not enough to get all the achievements. I've found that many of the achievements offered are silly nonsense stuff that's just not worth my time.