I don't know where you live, but my wife and I are in the process of doing the extended travel thing. I bought a 1983 Winnebago on a GMC chassis and a 5.7 liter engine. We started out traveling with my work trailer converted for camping, but every time we wanted something, it was either in my F150 tow vehicle when we were in the trailer, or vice versa. We decided quickly that a small motor home was the only way for us. Of course you have to understand that when we travel we take the whole family (4 dogs and 4 guinea pigs).
We have a permanent address, but you still need to have someone get your mail for you and let you know if anything important like winning the Readers Digest Sweepstakes or your great uncle leaving you millions is going on while you are out vagabonding around. You will also find that any established campgrounds like KOA will want a permanent PHYSICAL address, not just a PO Box. In many cases, the physical address must match your driver's license.
I have waited all my life to take off and go, suppressing the urge many times over the last 50 years or so. We got a taste last summer and it only made us more determined to make it happen. Even Parking in some old curmudgeon's yard in Montana didn't discourage us.