Artist vs. Art

So here's the question:
Do you like the artist or the art?
The singer or his/her songs?
The photographer or his/her photographs?

Or both?

Renowned fashion photographer Guy Bourdin was infamous for abusing the models he worked with. Is it solely his work that fashionistas are enamored with, or is it not only the work but also his character that people choose to love?

Let's have a modern-day example.

Take Terry Richardson. Many people are disgusted by his supposed "work ethic." And yet we see people loving him all the same. There are people that automatically dislike everything that has to do with him just because of his reputation.

Is this fair?

I'm not saying it isn't. But I'm not saying it is either.

Is it fair to associate a piece of work with the character of its creator, to be biased and pass judgment on something based on its origins and not its true substance?