It would be bad enough on two wheels never mind one, very surprised they don't have broken bones.
28/32 - good grief man, are you still riding 90s groupsets? If so, very well done (or of course you are out often enough to keep the legs in tip top shape to turn that) OR you live in the Netherlands so have no hills to contend with! ;-)
I do the mountain biking - not very well - but I tend to fall off and after lying on the ground for a while I tend to get up...