It's fun. It makes people lower their inhibitions and destress enough to have fun too. It's dead easy to make so it's not like banning it is going to work anyway.

Of course there are people who have problems with alcohol. While I don't think that it'd solve every problem associated with alcohol I do kind of think that improving stuff like mental health provision and making everyone's lives less stressful and precarious would go some way to solving those problems. Well adjusted, happy people do not regularly get blackout drunk after all.