I have discovered so many (good) bands via Spotify over the past 5 years it's honestly insane. If I had stuck to "guessing" at what I might like, I would not have had such a rich collection of new music from relatively unknown or foreign artists. It's also allowed me to sample so many varieties of genres without any direct monetary involvement. I wouldn't trade it for the world honestly.

I also support the artists I listen to by buying merch/going to concerts to supplement the pittance they get from streaming royalties.