I agree... I am 54 and recently did a 30 mile ride on my old "Craigslist Special" 1985 Fuji Del Rey and had no problems at all. I made me feel like a teenager again! I took my time and didn't try to race like the Tour de France or anything like that. I rode at a nice steady 14-15 mph pace.
On a good note, I am down to 207 lbs and need to lose those last 7 pounds, which is very difficult!