We started early - at 47 last year. I can't imagine doing the things I am doing now at 68. We could have had more money had we waited but we could have also been dead by then. I wouldn't trade my current full time life for more money and security. We have been lucky - our 457s are bigger now than they were when we started over a year and a half ago, even though we have been drawing them down for living expenses. If the market suddenly crashed and we started tapping our reserve fund, we could always start working again. Since we have downsized so much, even minimum wage jobs would be enough to live on in the right climate.
Nope, don't regret it for a minute. There is always a job somewhere if we need one. And there are plenty of fulltimers in their 20s and 30s who work and RV.
2015 Jeep Willys Wrangler
2014 Fleetwood Bounder 33C
States camped: all but Hawaii
more than 1700 days on the road