Nobody drinks because they are supposed to.
People drink because they want to.
Ultimately, it is a person's own choice to drink. Even I have said no a few times. But if they drink because someone is forcing them or pouring alcohol down their throat, then they obviously need some self-esteem and some new friends. But if that's your thing, then that's cool with me. In fact, you'll wake up feeling much better than I do the next morning.