Love this thread. I totally agree with OP. Anything with 2 wheels is fun.
I'm 44 this year, been riding for more than 30 years. My wife is Chinese and we go back to her hometown out in the farmland pretty frequently. Nothing to do out there.
Couple of years back I bought a cheap-o little 125cc motorcycle. Clutchless 5 speed. Probably puts out 7-10hp max. Bought for 4000RMB (about $700). Looks like a cross between a scooter and a motorcycle, actually. Goes about 55mph downhill max speed (and feels like it's gonna rattle apart at that). But I love riding it. Hop on it just about every day when we're out there, and take it for a spin down the little strip of road, or in the fields, or whatever. I can even get it to wheelie (!!) a little bit with just the right technique. Fun. As. Hell. After 30 years, still can't get enough of anything on two wheels.