I like the concept. There are even young people experimenting with retirement but for typically one year, also known as a 'gap year' where they don't work/study - they just explore.
This gap year has been pretty common in Europe/Aus/NZ for a while. Lots of young people do it. We even have visas for it called "working holidays" so they can work a part-time bar job etc, so you dont need to save up much to do it.
I missed my chance on this. I hope I'll get another after my kids grow up a bit. I believe this is called "sabbatical" (except in this case it'll be self-funded).