We have a good friend that we met over 10 years ago, 5 years before we retired. He told us that you need to practice for retirement before it happens or you will run into problems. We took his advice and made as many trips as possible before we retired.
Year ago we met a couple camping in Indiana. One set of their parents had a dream of making a cross country trip, but kept putting it off. Finally in their mid 70s they were ready. Bought a MH, stocked it, and were ready to go. The morning they were to leave the wife died of a heart attack.
Don't put your dreams off.