I think 711 rather than see those guys as being selfish you might better view them as being victims of the industry... and you'd be better off campaigning for extensions to age limits rather than opposing them... you're on the same train, just a few carriages back !
Most of us thought of being able to retire on a reasonable pension by 60 yrs of age only to find it a complete joke.... and that's the lucky ones that hadn't been furloughed 4 times or been the victims of company failures. Add to that the all too common AIDS involving maintenance payments and college fees and the vision of some wealthy, selfish, aging crews soon dissipates.
You need to start looking over your shoulder... fate is creeping up on you.
As for the younger ones wanting to move into the left seat, that's perfectly understandable and no doubt frustrating ... unfortunately it's just one more sad side effect of today's industry... there are many more and people who are considering a career as a pilot will just have to take that into account.