For those of you who adore Justin Beiber, I want to know, what is his appeal?

I'm a huge fan of Extreme Metal, Goregrind in particular, and I wanted to maturely ask what Justin Beiber's appeal is? I don't understand, and would like to, so I am asking, please respectfully and as unbiased as possible, convince me why Justin Beiber is labeled as "incredible". I just see no charisma and no talent in him, and would like to understand more.