Im 57, my father 87. We both ride and can make shoulder checks. My father also skis at mount washington every winter.
as for vision - you pass the eye test or you dont.
and anyone over 50 has psyc problems?
and old people in cages just cause crashes?
prescription drugs will turn accidents into fatal crashes?
EDIT
I don't know where you get your "thoughts", but you need to learn to speak for yourself rather than gloom and doom 50 + older folks. No different an attitude from those who say all sport bike riders are hooligans....
Im pretty sure there are plenty of 50+ riders who could embarrass you at the race track. My father at 87, has never been involved in a motor vehicle accident ...EVER. car or bike. How about you young guys, have you got 65+ years riding and driving w/o ever being in an accident? and that is 37 years at 50 over. My mother once recalled to me my fathers first car in sudbury....it had a hand crank on the front of the car for starting, my mother would have to ask someone strong enough to crank start the engine for her when alone.....As a youngster myself (pre teens, teens) my father always had a vette in the driveway - I remember the 62 convertible, the 68 with a 3 carbs 400hp 427 4 speed convertible, and a couple 70's vettes. Just in case you think my father has never got in an accident because he rode/drove like a grand pa (pun intended). My mother did spin and hit a telephone pole rear end first (lakeshore in oakville) ...with one of the 70's. My mom was under 50 at the time.
Bash on, makes me smile.