Does the artist affect your enjoyment?

I always find it so fasinating that people are so tolerant of artists, accepting behavior that if you knew the person in real life that you would make efforts to keep away and defriend them.

I know that for me whenever I see/hear music from Michael Jackson that I am less than interested in hearing or seeing anything more from the man (I freely admit that I was apathetic about his death, it really meant next to nothing to me since his behavior to this point had already made him dead to me as an artist). I just don't know how people are so able to separate the person from their work, when to me they are so interrelated. I just can't do it.....