Though, after you've home brewed the beer, you've now got potentially gallons of beer in a giant pot that you have to bottle yourself. Or you could be lazy and just drink it yourself. True, you could just go down to the store and grab a 30-rack of mass produced beer if you wanted to be an alcoholic, but having a vat of beer in your kitchen that isn't going to drink itself and is gonna go bad if you don't, is a different kind of peer pressure.