I have 3 answers to the OP:
1. I play regularly in 2 bands tin different genres, and dep with just about anyone, so there is plenty of variety for me.
2. It doesn't bother me that the it's not my original material, or the band's original material - somebody wrote it originally!
3. I don't choose to listen to Blink 182, Abba, or Gilbert & Sullivan, but it's a lot of fun playing the songs, as well as frequently challenging.