The disadvantage of using Spotify is that only a tiny fraction of your money ends up with the person who actually created the music. You are part of the commodification of the arts and eventually won't notice when everything is created by AI.
If you use Bandcamp, and occasionally pay for downloads, you will help to keep musicians in existence. On the first Friday of every month 100% of any money you spend on a download, or vinyl, or a CD, or merch, goes to the artist.