You obviously can get a job at 38, but it doesn't mean that you will. Are you prepared to risk your family's welfare on that possibility?
Really, to answer that question fully you have to honestly quantify why and how you want to fly. If being in the air, controlling a small aircraft, possibly with some aeros or formation thrown in, is what floats your boat - do it privately, and continue earning a good living in IT. If, on the other hand, you're determined to exchange your dreams for the sometimes-less-than-wonderful environment of an airliner flight deck, then get on with it!
There've been a couple of threads recently on the realities of flying an airliner professionally. Look them up. You'll find, as in all jobs, there is repetetive routine, interference from above, too much paperwork, not enough recompense (we don't all work for a US major!), etc. etc. In other words, it's real life as you already know it! It has its compensations, and they are significant, but the romance of flight largely belongs outside the professional sphere. If it's romance and ideals fulfilled you're looking for, you may be barking up the wrong tree....