Nice story, aquist, but sorry about your wife.
I'm 72 and ride about 100 miles per week with people of the same age group, the oldest is 79. Some of the rides are on our tandem with my wife of 48 years, the others on a solo bike
We average 15-16 mph,and sprint up to 30 mph, but it's pretty flat here, So far this week I've ridden over 160 miles. You guys in your 50s are mere young-uns