I can still be in control! This not true because drinking does impairs your judgment, which increases the like-hood that you will do something you'll later regret such as having unprotected sex, being involved in date rape or some sort of assault, damaging others property like their car or house; or being harmed by others. Sometimes there is no physical damage its can be verbal. When you drink you tend to move and function slower than normal and your speech is slurred. These simple things can make a big difference.
I'd be better off if I learn to "hold my liquor." If you have to drink more and more large amounts of alcohol to get a buzz or get high, you are developing a tolerance for alcohol. This increases your chances of developing several serious problems, including alcoholism. People often say that they have a high tolerance for their alcohol which is why they can hold it better. That is not true. Your body has just gotten use to the alcohol and after so long you are going to want more than just those 3 beers that normally get you drunk. Now it could increase to 6 or 7 beers.
I have to drink to fit in! Your peers don't drink as much as