The best point I have was allready brought up by Greg. You gotta think that by the time you are of that age, with all that travel under your belt your good for a lot more than a retirement home when it comes to getting a job, or settleing down somewere. Your experience would likeley blow a couple of employers into a tailspin.
And let the record show I know quite a bit of 62 year old (My boss is one of 'em) that are more than bodily able to travel. Vagabonding isn't just for the young and restless

Srsly, my boss is insane, but he takes care of himself, the guys looks like he is 40, and he is 66 years old! lol
When it comes down to it, yea, its a risk and I don't think you can fully avoid that.
But when it comes down to me personally (meaning the rest of this responce is from a more
personal perspective

), travel has something in the way of oppertunity that most things can't or don't. A solid education, and the ability to be open towards massive amounts of oppertunity isn't something that often lets you down.
If it helps at all there is a little piece of advice I remind myself of everytime this question gets to me. "He who tries to save his life looses it, and he who gives it up gains it".
The first version of this text was written in Greek, and the speaker didn't use the greek work "bios" meaning our actual life, but the word "phyce" (I think thats how you spell it) meaning our innermost selfs/mind. We may be able to live secure, controlled lives, but that comes at a cost. There is a cost going both ways. The point is that a person can be so caught up in makeing sure they have a "Good controlled" life, they miss out on haveing any real life at all. Me I rather enjoy the thrill of the risk, do what little people do, and gain more in letting go than in holding on.
So its that risk, that makes this part of the process appealing, for me anyway. Yes it is a reality that I may "Die in a pit" because of my travel, but if I knew everything would be okay then it would lose its appeal for me. Boardom is what kills a man from the inside
But like I said, the cost does run both ways, and its too easy to focus on the extremes of each sometimes. There is no real "Moral high ground" when it comes to this. It really is a more subjective personal choice!

Hopefullly this advice helped, and don't be shy about telling me if I lost you. I find myself loseing people because I didn't explain something fully enough, or by some other means of neglect more often that I would like!

Take care,
-Vhan