Good music from bad bands?

I have a question, sparked kinda by reading: forums.catholic.com/showthread.php?t=163779
(best rocks stars of all time)
What do you guys think about listening and/or buying music from bands whose music you enjoy, but whose lifestyles you don’t promote?
like for instance, someone does benefit concerts for bad organizations or candidates, or if someone has an immoral lifestyle, should we promote them by listening to their music? my choice would be no, but thats like trying to not buy things made in China… you can’t do much on your own and it doesn’t seem like a swarm of people will follow you.
thoughts?

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