I rode from 14 years of age into my mid 20s. Had a variety of street and motocross style bikes. My last were the Kawasaki 900 Z1 and a Bultaco 360 Pursang.
I stopped riding when I figured out I was more often in the air than on the ground. With a baby on the way, I had to decide my obligations outweighed the fun of my hobby. I've missed riding and have tinkered with picking up a Can-Am Spyder in the last few years. Maybe ..... maybe not