Welcome to SR.
I mostly drank beer but unlike you I couldn't stop at 2 or 3.
I say give moderating a try.
If you can go into those social occasions and only have a few brews without getting drunk and acting stupid you may not have a drinking problem.
If on the other hand beer just repkaces liquor in these situations and you drink to excess in them on a regular basis you will have to come up with a different strategy.
If you end up deciding that you should quit there is plenty of support for you here.
Good luck.