At 18 I bought a Jeep pick up and built a "camper" on it. A plywood box that I could sleep in.
Then had a period of tent camping.
A GMC van with a bed built into the back and cooked and did everything else outside.Would have been about 27 then.
Back to tents due to kids coming along.
Bought a 1989 Bonair hard top tent trailer, all canvas sides. Pain in the .... when canvas got wet. When doesn't it rain when camping??? Kept that for 20 years. So that covers 38 to 58.
Bought the Jayco TT in sig in 2009 at 58and the Bigfoot TC at 60. I think we'll be keeping them for several years yet.
And still have tent in the mix as well, but really like not sleeping on the ground.