Spotify is so cheap that it is worth it for the convenience alone. Not to mention Spotify is legal while piracy is not.
However, I agree that if you enjoy music (or any other art/content) someone produces, itβs only fair (and natural) to support them in a more direct way.
I suppose the qualifier here is "there's no moral point in paying for streaming". If you're fine listening to your favorite artist but paying Taylor Swift for your convineinece, cool.
You'll benefit the artist much more by throwing a real dollar at them and pirating their music.