I started on a knackered Raleigh moped which had a fanbelt primary drive which gave an auto experience with authentic torque converter slip.
Next was a slightly less knackered Yamaha FS1E.
The bike I had most fun on was a Honda CB175.
It handled terribly and was pitifully slow, but - after it was fettled - was bulletproof reliable and almost unbelievably economical.
A newish Honda 250 Superdream followed.
In theory, an upgrade to the CB175, but it didn't click with me.
My last motorbike was a Suziki GS125 commuter which I had in London in the 1980s.
Many of us that started riding in the mid 70's had a Fizzie.... or a Honda SS50.