I think that you are right about itchy feet. When I was 19, living in Quebec, a friend and I bought an old VW van and travelled through Canada and USA.
After my wife and I were married and living in Calgary in 1979 we decided to change jobs and move to the west coast. We sold up but went to the UK first. Bought a used VW van and travelled through Europe for four months.
We travelled with and without our children. My son has the bug. My daughter does not.
We have always travelled. The first thing we did after retiring was downsize, store or belongings, and travel for seven months. Now we are back but we travel at least twice a year for 2-3 months at a time.
And we still have lots of places to see. If it was up to me, I would store everything and travel for 12-18 months quite easily.