We also have been living like this for about 6 years. The main difference is we have a home in a very low cost of living place where we can keep "home". It's cheap enough that we just spend a few months a year there, but when we're there we can work through those nesting instincts.

I live out of a single backpack and carry-on. Nothing I carry with me is precious. It could all be replaced in an afternoon with Amazon. I rely on furnished rentals and a couple of "stuff caches" in family closets and garages here and there, mostly with things that make life in that specific place a bit nicer. I've also "bought" family things that we get to enjoy while we are there. I own and also don't own a kayak that I use a few weeks a year and a surfboard I use for a few months.