Hello,this is an interesting site and thought I'd drop in for a visit.
I'm 62 and have biked the better part of my life, using them for transportation & fun ( bike polo) and to deliver the newspaper.
Not the high tech type equipment until this last bike ( 15 year old Schwinn Voyager with Columbus Tubing ) bought new for touring. I've been riding the MS 150 for the last five years and completed a century in two of those years ( this year being one of them).
I take a multi vi. and yes I have "slowed" down, I can see by my training logs from years past. I have always worked out, using Soloflex, free weights, Nordic Track, exercise bike, tredmill. Have always been fit, so I had nowhere to go but down. Was a runner until my knees said otherwise and I don't have knee problems riding the bike.
I mainly ride for fun and start pushing in July of each year to get ready for the MS ride.
I would guess my mileage at about 1000 miles a year and the only time I ride in bad weather is for the MS150. Three out of the five years there has been rain, other than that, I'm a fair weather rider.
I've also started doing my own mechanic work, but will be upgrading the drive train at the shop next month. Keeping the frame for the comfort, but want to lighten up the rest of the bike. Wheels were changed this year, other upgrades done over the last 5 years.