My brother and his wife did this; quit their jobs and spent a year in Europe "slow living" (still did a bit of consulting work, maybe 10 hours/week), but with careful planning were able to keep their expenses waaay down (not sure of exact figure but much less than if living in the US). Month-long AirBNBs in non-tourist areas are inexpensive, so they'd spend 1 month in each place. A lot of walking, hiking, trains, just living. Not Paris, London or Zurich of course, but places like Albania, Montenegro, Portugal, Greece, Turkey, France of course. (Part of the reason for going to those countries is you can only spend so long in the Schengen Zone.) So you don't have to go as far as Vietnam or Ecuador to do this.

Obviously the OP has no children (and my brothers' kids are grown up) - if you have kids this changes the equation completely (though if they're very young then it can still work).