Peer Pressure

Well, that's hard to say considering when you hear "peer pressure" it comes off as a bad thing. But the worst I'd probably say would be sex peer pressure, drug peer pressure, and criminal peer pressure (as in breaking the law)

Peer pressure has been known to lead to suicide and suicide attempts. Individuals who feel too pressured by their peers have chosen suicide as a way out. Other individuals have been so badly harassed by groups of peers that they felt suicide was the only way to end the struggle. Peer pressure is a difficult thing to deal with and some individuals have taken drastic measures. While individuals who choose suicide most likely have more going on than difficulties coping with peer pressure, negative peer pressure can be a contributing factor. TEENS WILL GIVE INTO PEER PRESSURE TO BE PART OF A GROUP OR GANG.THEN THEY WILL GET PRESSURED TO DO SOMETHING THEY REALLY DON'T WANT TO DO.AFTER THAT TEENS WILL GET LOOKED DOWN UPON OR MADE FUN OF SO EVENTULLY THEY WOULD GET AGRIVATED FROM PEOPLE TALKING ABOUT THEM.FINALLY IF THE OTHER TEENS DON'T STOP THEY WILL FIRST TALK ABOUT COMMITING SUICIDE AND BELLIVE THAT NONE OF HIS/HER FAMILY CARES.BY THINKING THAT NOBODY CARES ABOUT THEM THEY WILL COMMIT SUICIDE.

Quite often, peer pressure. They then get hooked, and can't get themselves off of it.

That's not necessarily true. Different people will think different characteristics are attractive. There is someone out there for everyone, someone that thinks you're the most beautiful person alive.