Same for acting and actors/actresses, I suppose, or any other kind of creative art.

Example: I like certain songs by One Direction and Justin Bieber, but I dislike Justin Bieber and One Direction have done little to convince me they are lovely people.

I'm curious as to how many people can actually bring themselves to admit that. But I've had people listen to music and enjoy it, and then get told who sings it and basically go "Urgh, that song is ruined now, I hate it." That perplexes me to some extent. I think there are very few artists out there who I can abhor so much that I dislike songs just because they are sung by the artist. They would have to do something very wrong to warrant that kind of treatment.

Speaking of doing something very wrong - I suppose it'd be interesting to see if I can enjoy re-watching The Cosby Show someday. Something tells me I might not be able to. =[