Funny, I've been doing the same thing. I also did it a couple of years ago, so I'm slowing thinning out my stash. I also plan to use up some for pieced quilt backings.
Yes, our taste can change!! Mine sure has. I found so much that I wondered "Why did I buy that" lolol
I'm also a sucker for bargains so that may explain some of it.
But I'm still finding stuff I forgot I bought and that's fun to uncover!!! :D