Is 70 the age to stop towing

DH is 85 I soon will be 83. We spent almost 20 years doing 5 or 6 week trips. We never went full time just not our thing. We are still at it only now we are back to camping again. We are in north west Indiana so we head up north in Michigan or down to southern Indiana at least once a season. You can usually find us at one of Indiana’s state parks on holidays. We love all the noise and kids keeps us young. Our son in law says when we no longer want to drive but want to camp he will gladly get the unit to a site and back home for us. He and our daughter have class C and are often with us, now granddaughter and her family 2 kids (22 mos and 3- 3/4) have an old pop up and will be joining us in the spring. We are in good health and no real joint problems so we will do it til we can’t.