Here's my ideal motorcycle:
Both are 500 cc bikes and will do everything the other bikes will, with judicious riding. Unfortunately, the American wannabe alpha male need umpteen bajillion horsepower to drive our 200 miles a year at 35 mph. Hopefully late at night with straight pipes so the a-hole effect is compleat.
Except go on a cross country trip via interstate travel, give a comfortable ride on bumpy highway and city streets, or not struggle on mountainous roads.
I wouldn't take a 500cc more than a mile or two down an interstate, not to mention if they are loaded down. That is why the Harley's, BMW's and Goldwing's have the motors they do in them.