Do you need to agree with an artist's lifestyle or politics to appreciate their art? To spend money on it?
I think that art is an expression of one's worldview, how one sees the world, how one wants to communicate with others so in that context, I would think that an artist informs his or her art with everything within them. I am not an art expert or connoisseur, I just know what appeals to me and what pulls at my heart strings. I adore Vincent Van Gogh, it doesn't matter that he had mental issues, his vision was one of beauty. Perhaps he fell to mental illness because unfortunately reality fell short of his inner vision of beauty. I adore Claude Monet and after having visited his home in Giverny, France, I felt closer to knowing the man and his love of gardens and light. How can you not appreciate a man who loves nature?
I think that the artist and their art are inextricably bound together so if you love one, you love the other.