Where is the cycling equivalent to Parkrun?
Many Parkruns are voluntarily organised and marshalled by members of local running clubs too which sort of dispels the criticism somewhat which is aimed at running clubs. Also, I can all upon a number of guide runners if I need one but tandem pilots are significantly thinner on the ground.
And, you don't get the mamil factor in running. No bad thing.
A direct cycling equivalent to parkrun would be lovely, but it would be very difficult to come up with a format which allowed a large group of people of all ages and with very mixed abilities to compete safely on the same route together at the same time. The fact that a close equivalent to parkrun doesn't exist in cycling reflects on the differences between the sports, not any selfishness on the part of cyclists - there are plenty of cycling volunteers organising Audaxes, CTC rides, Breeze rides, charity sportives etc.
Likewise with tandem pilots. Quite honestly, I'd love to do it. But I'm a small bloke, I'm not experienced piloting a tandem and I really wouldn't ever be happy to be entirely responsible for someone else's safety when the consequences of getting it wrong could be very serious indeed. Again, it's not that cyclists are in general more selfish, it's just that the sports are very different and aren't always directly comparable.
Also, my point wasn't that running clubs are all bad, necessarily, just that they have their fair share of narcissistic attention-seeking idiots! There are of course plenty of very hard-working, kind, unassuming runners too.