There are some things about Justin Bieber, this "role model" for kids, that আপনি may not know. Sorry to any of the Beliebers out there.
He's attacked and screamed obscenities at photographers.  He says rape happens for a reason.  He wrote in the guest book at Anne Frank's house that he "wishes she was a Belieber."  When he was asked to try being vegan, he spit out the vegan মাংসের ফালি that was specially prepared for him and made gagging sounds.  He peed in a restaurant kitchen.  He's frequently late to his own concerts.  He's been kicked out and banned from places for throwing temper tantrums.  He spat in an old man's face. 
Then there are a few unconfirmed reports from security guards and others:
He won't ride in limousines if he doesn't like the color. He's faked an asthma attack and then laughed at arriving paramedics. When he does visit children's hospitals, he won't get near the kids while cameras are off. He's been removed from a movie theater kicking and screaming while calling everyone "worthless monkeys."
Justin Bieber is NOT
a good person. At all. No one should idolize this person regardless of his music. Again, It's your life and your choice. I can only make আপনি aware and warn you. The choice is in your hands but not the consequences.