Why do teens give into peer pressure?

Answer 1

There are many reason. It could be because they think it is cool. They think, "Oh cool, everybody else is doing it maybe I should try." Perhaps they are stuck in a situation where it is either do the drug or whatever or get beat up.

Some of it goes back to their upbringing. If they have strict discipline and are taught not to give in nor care what others think, they tend to be more able to resist. But even then, it is still possible to fall. You cannot develop inner strength just from lectures. Personal experience and mistakes are often required.

Answer 2

Teens may give into peer pressure due to a desire to fit in socially, fear of rejection or isolation, or a need for approval from their peers. Additionally, adolescents are still developing their sense of identity and independence, which can make them more susceptible to outside influences.