We had never camped at all, but we were avid hikers sick of dirty motels and bad food. So in our early 50s, we bought a little used trailer as a mobile motel room, just as an experiment. If it did not work out, we would re-sell the starter trailer.
As it turns out, this hobby has taken over our lives, in a good way. We camp between 60 and 80 nights a year. Because we got a 4 wheel drive SUV (and later a truck) for towing, we go places we never could or would have gone. We boondock in remote areas of the national forests, miles away from any other person, for days at a time.
When we realized we were hooked, we sold our starter trailer and bought a new one, outfitting it with a lot of boondocking modifications.
Our only regret is waiting till the kids were grown to start trailering. On the other hand, the privacy is delightful -- it's just the two of us in our "rolling empty nest!'