This thread has drifted from where it started but sometimes that's OK because threads take a life of their own after the OP's question has been answered.
How much money one needs to retire and how much one needs to travel in retirement are two questions. I'm prepping for the latter but feel I could be content with the former if life threw me a curve because of influences I had in my life when I was young. I had a great aunt who was like my grandmother who lived on a 1,000 school teacher's pension. She lived in a long paid for old house that was designed to not get too hot even in south Louisiana. She grew her own vegetables, got her books from the library, and used over the air TV, not that there was any other TV option until late in her life. She saved enough money monthly to pay cash for a simple car every 10-15 years.
Now, I know that the kicker is the increase in healthcare costs since her retirement days but when you cut internet, cable, live in an area with minimal property taxes, etc. you drastically reduce your monthly costs. And she enjoyed the heck out of her retirement until she outlived her friends and got lonely.
Again, I aspire to a more active retirement but I think I could be content with simple, country living if I had to. Sure lived with less on a couple deployments.