No way. There are plenty of people that are in my college classes that are much older than you. And they are doing fine in college. Now is the perfect time to begin your college career! Good luck in whatever you choose to study!
22 is still pretty young. If you go to community college there is a high chance there will be someone even older than you. I know people that go back in their 30s and such to get a better position. Nobody is ever too old to go back, the oldest person I knew that went back was 48.
That's not necessarily true. I've heard of people as old as 40 or 50 going back to get a college education. Which is what its for: adults, no matter the age. So I reccomend that you do. That way, in the future, your life wont just be work and work. You'll have more free time, more opportunities to do what you want, and you'll live a more comfortable life in general.
You need to change your thinking! I went back to college when I was 24 and I was still just a freshman at that time. I am now 28 and just started my graduate program. I will be at the very least, 32, when I finish my Ph.D. There were students in class that were in there 50's when I started back 4 years ago. You're never too old!