I know I'll likely never manage to get through everything I'd like to read, but I want to at least make an effort to read more of it. For several years I didn't read very much, but had a sort of 'ah, someday I'll get to it...' mentality, and then it started to feel like someday wasn't ever going to happen. I know that it'll be a few years at least before I get through everything on the current list, and in that time it'll only spawn more!
But it's also a good problem to have: it's nice to know I'll never run out of things that I want to read.

(Though I know the frustration of not knowing what to expect I'll like best. Outside of a handful of authors that are pretty steadily enjoyable for me, I've been surprised both positively and negatively by what I end up caring for or not. I didn't quite do a random sort for my TBR, but when it came to some of the book bundles I'd purchased there's a bit of an element of randomness to it. A few of those somewhat random ones have been nice, because the books were decent and I might otherwise not have picked them. Others I wouldn't have picked and while I don't regret reading any of them, some also wouldn't have broken my heart had I not read them, ha.)