I've downloaded at lot of seventies disco stuff. Not because I wanted to, but because I had to.
See, I would much rather buy a (or several) CD with all that music full length and in excellent quality. But I can't. Believe me, I've tried. At best I can find a compilation album, of which 80% of the tracks are of no interest to me, or (even worse - this is close to sacrilege) all the songs have been cut (sometimes as much as by half!), just to let them push more songs onto one CD. I really hate that. I want FULL versions, but they are impossible to find.
So that's why I download them. They forced me to.