There is a legal and a moral side to this question. The law says once you’re 21 years old you’re free to buy and drink alcohol. The moral side, however, is more stringent. When you are 21 AND mature enough to drink without getting drunk, then you can drink alcohol but with this caveat: drinking alcohol should ALWAYS be done in moderation. Forming a habit of drinking could easily lead to drunkenness or worse alcoholism. It’s also important to note that those who are prone to alcoholism, addictions, or have health issues that are worsened due to alcohol consumption shouldn’t drink alcohol at all.