Too old to continue traveling ? Grown children urging ..

Everybody's different. We didn't come out till I was 69 and I had never driven anything more than a car. We've been out 7 years now, have been all over North America, towed over 65,000 miles and still going strong. I'll park it when I feel I'm not up to it any more, or my wife tells me it's time, not before.
Go for it - you only live once.