You have the right to put alcohol in your body if you want to. And society really doesn't care. In fact, liquor stores, cab companies, restaurants, and ball parks are all very happy that people drink. You are free to drink as much as you want in your basement, but when that drinking starts to impact others and/or put them at risk (lashing out, angry, stealing, destroying property, driving drunk, insulting, etc.) then society begins to care.