You will most likely find it harder on yourself the longer you wait to enter the dating game, if you ever plan on marriage or a serious long term relationship. At 22 I wouldn't worry much, but don't shut out the fact that people start pairing off in their 20's, and you might wake up at 35 to find yourself in an "all the good ones are taken" situation and regret not taking more risks when you were younger. I am talking about dating and "social risks" like having the confidence to ask out someone that you like, not dangerous "sexual risks" of course.
Dating teaches you relationship skills on how to deal with others, and it tells you a lot about yourself and what kind of person you really want. Sure you could meet the first guy and live happily ever after, but in reality most people go through quite a few "trial" relationships before they find "the one". It's hard to know if they are "the one" if that's all you've had - what do you compare it to?
Now would be a good time to start casually dating if you are ready. If you are not ready you need to ask yourself why - and if postponing dating for a few years will make you ready, or just waste time. Like Shelley said it gets easier the more you practice.