I do see your viewpoint, but so many people feel so guilty here, as if they are at fault if their birds do not live for 8-10 years. I am a true believer, in good food, good water, good protection, and don't let them suffer and then their lifespan is beyond my control.
If one has a bird that...
I always worry when people have posts like these. It is almost like a competition. And really unrealistic. Look at the old people around you, some die at 60 and some at 100.
I think it is mostly the luck of the draw. I have had two that reached 5 years of age. Currently I have Gramma feathers...