For me, being a director is about watching, not about telling people what to do. Or maybe it's like being a mirror; if they didn't have me to look at, they wouldn't be able to put the make-up on.
Discrimination due to age is one of the great tragedies of modern life. The desire to work and be useful is what makes life worth living, and to be told your efforts are not needed because you are the wrong age is a crime.