Yeah, mine is also a little bit ridiculous. I think Spotify encourages a certain overconsumption of music; for me, the things on my liked list are not necessarily things that I value equally.

I buy things that I either already know or have discovered on Spotify and that I enjoy enough that I want to own, so I amass a collection of favourites over time. I would never buy everything I've ever liked on Spotify, but that is also because my personal goal is not to become entirely independent of Spotify. The goal is to be a bit more intentional, to have a bit more autonomy, and to avoid good things vanishing into the inky blackness of distribution rights being withdrawn.