I have never loved 或者 hated a celebrity. I don't believe in celebrity worship. To me it's a waste of time as 你 probably would never meet them. I can enjoy their songs and shows and stuff, but unless I meet them and really get to know them, I can't really say anything about them.
So far, I am only supportive of a few stars who have done good things 或者 those that had suffered through hardships and had proven that they aren't the stereotypical snobs of Hollywood, like Demi Lovato. As for Justin Bieber, well, I don't like his music, but I do respect the guy because of certain reasons. So in short, I don't hate him, he's one of the stars who would get support from me if he ever went bankrupt 或者 something, but I dislike his music.
The guy himself seems allright, but his 音乐 is an inuslt to the concept of music. If 你 are going to do a style of 音乐 heavy on vocals, 你 may as well put in decent lyrics, and even then 你 can't beat a solid powerful melody.