So, own nothing.

Every square footage of every home costs $$$ to keep in your possession. I pay a mortgage. I pay insurance. I pay taxes. I pay maintenance costs. There were acquisition costs in the purchase of it, and there will be acquisition costs wherever I go next. Not one square inch of my home is "free".

Suddenly that simple answer isn't so simple when actually confronted with reality, unless you're willing to be homeless and just carry your possessions in your hands.