Too old to continue traveling ? Grown children urging ..

We are about 70 and are sometimes on the road in our 5th wheel for 10 weeks or so and our adult kids have not questioned it at all yet. We are healthy and physically ative. This is not something your kids should decide at all as long as you don't get dumb about it and try to continue when you aren't really physically able to do it safely, especially the driving part. We all know the day will come when we should quit and stay home but that might be 85 for some and 60 for others.