Sure, but it all depends on whether it's causing you problems or not. There are different ways to life to one's satisfaction. If you're having problems, you should change things up and push through discomfort and friction or just try things. But if you found a balance that works, then it's fine if that involves being alone a lot and just occasionally meeting people. Depends also on phase of life. In college freshman year you probably want to force yourself to go out regardless of how you feel, to establish some contacts and friends. Once you have a circle, it's fine to just live the way you enjoy it actually.