I wasn't able to have a motorcycle until I was older (read - out of the 'rents house!). So, I bought a leftover 90 CB-1. A year later it was stolen. My first vintage bike was a low mileage 75 CB400f. It looked the best and it was like the bikes I drooled over when I was in school in the mid 70's. Boy, I wish I had the money to buy anything new back then! I would be nice to be an original owner of any bike in the 70's! In 75, I was only 10. A 1975 XR75 or CB125 would have been a sweet deal! I would have really taken care of that bike and I would still have it today.
I did get to ride a small Honda when I was about 14. It was a friends bike and I remember it so well. My mom was screaming while I rode it around the house! The thing I remember the most was the small speedometer (no tach). So, it was likely a CB or CL100. It's cool that my son has one now.
The first motorcycle I had ridden on the back of was my dad's Goldwing, maybe a 77 or 78. He changed the seat to the King & Queen dual seat. I guess I was the "Queen", hah! Great memories! I still remember how that flat 4 sounds and when it shifts - smooth!