I am 64 years old, and quit biking 10 years ago and sold my Pro Flex "Beast". Now I have been smitten with a 29" Mt. Bike. The question is: what is the down side (Negative) other that harder to get the pig rolling. It goes on sale Sunday, and I'm feeling the need for some downhill speed. Any negatives to a 29'incher..........:dunno: