It makes you more confident and sociable. Another cause of teenage drinking is escape from stress of school if they are overwhelmed with work or that they get really worried over slipping grades and that they just need to relax. Drinking will only make things worse. Many teens drink because of peer pressure or just to fit in. Kids may think that if they drink then they will fit in with the crowd and become more popular.
Kids spend most of their spare time partying.
The kid who doesn't take something to drink has a dozen friends all over him. Teens drink for the effect. To get high, to rebel, to alter their feelings of their environment, if only temporary. One of the main reasons kids drink for effect is the freedom it gives them. A problem of drinking for effect is whatever age the child is when he starts depending on the effect of alcohol, that's the age they are when they have overcome there drinking problem.