Mail Forwarding and Home Base

When we were starting fulltime we began investigating all the mail forwarding options. Several major issues came into play, especially if we went with an out-of-state company/address. Would we have problems with our health insurance if we had to change our mailing address. In our home state you have to have a physical address, not a P.O box address. Would vehicle insurance costs change, registration issues? We simply changed our address to our son's address. When we are on the road we leave him several pre-stamped padded envelopes so he can forward mail every couple of weeks. When we are back in our "home" area for part of the summer we just visit his home every week and pick up our mail. For us it just seemed so much easier than searching out a mail forwarding service.