It's not that you regret it. Most end up settling down in a warmer state they find the like after X amount of years on the road.
IMHO what I have seen is the full-timers that have children spread out across the US tend to keep the full-time life style longer.
Visiting all their family during the warm months and then come winter hunker down in a southern state like the snowbirds do. Best of all the worlds for them.
I don't regret selling the house and hitting the road. It was great, I feel very blessed to have had the opportunity to do so. Wouldn't change my decision.
I found myself always going to Florida every end of the year to spend the winter months in the sun AND when the housing market crashed I just could not pass up picking up one of the steals of a foreclosed home done here for practically nothing! I bought a real nice house on a couple of acres. Which eliminated my high cost of Florida CG's during peak season down here.
MH parked out back and still ready to go. Won't get rid of the MH. Plan on getting out of dodge during Florida's hot summers next year. Perhaps now I would be considered a reverse snowbird! :C