I think we can seperate his personal life from his musical life.
He was a great performer and singer, but the thing I admired most was his ability to write lyrics and sit them to the right music. I saw him interviewed once about writing Billy Jean, he wanted to do a song with a great bass and said he woke up one morning and started playing in his head duut duut, duut duut and the song was born from there.Being a 3rd rate writer here, I can appreciate that about him.But, you have to admit his music was catchy, it can get in your head and stay there all day.I would have loved to have just a little of his ability to write lyrics and music!
I'm sure his mother will mourn for him. About the other members of his family, I don't know. I always thought they used him, and his father was a monster!!!