If your perspective on housing is "just need a place to live", then paying off a mortgage for 20 years is hardly a problem. You are tied down, yes, but if you have friends and family in the area and like where you live, it's hardly a problem - it's just a life.
(Of course this is different if the intention is "buy a place, wait until it rises in value, flip it, and repeat")
That said, you need to want to put down roots, and you need to like where you're putting those down. I love Vancouver, I've been here 20 years, I left for 5, and came back. This is where I want to raise my kids. But this is a highly privileged perspective backed by having a good well-paying job that lets me afford to live here (in a 3-bedroom condo in east van).
Still, travelling the world for 5 years sounds like a fantastic plan to figure out what you want to do in life and scouting out parts of the world that you can imagine living. That could mean finding something more rural, or finding a city more off the beaten path that you identify with that doesn't have international prestige and ridiculous VHCOL.