Any mode of transportation with an engine is fun. In 1975 my dad bought me a new XR75 Honda for my 13th birthday, I still ride it.I was 15 when a friends father put a Colt Gold Cup in my hands and it was the 1st pistol I had shot. Still love the 1911 but lean toward guns with more bullets.
If it has two wheels and a motor it will put a smile on my face. Started on a friends mini-bike and my grandfathers Honda 90. Had Honda's and Kawasaki's and ended up with Harley's.
When I was in my 20's an elderly neighbor bought a moped and was so proud of it I that when he repeatedly pushed for me to ride it I finally relented. I was embarrassed to be seen on it as I rode off but a block away I had a grin on my face. I was so ashamed.