I bought my first Kawasaki in 1973.
For bikes my favorite is my newest, a 2008 Kawasaki ZZR600- my 70s and 80s bikes were less reliable, vibrated more and had weaker power, braking, shifting and handling. The air cooling made me sweat more in the summer.
I still own a 2002 Honda Shadow 600cc cruiser, with the old style V-twin, 4-speeds, but newer water cooling, and about half the vibration of my previous 1978 Yamaha XS650.
For the dozens of bikes you have owned or ridden, which few stand out the most?
"We have created a Star Wars civilization, with Stone Age emotions, medieval institutions, and godlike technology. We thrash about. We are terribly confused by the mere fact of our existence, and a danger to ourselves and to the rest of life.”
― from Edward O. Wilson, The Social Conquest of Earth.