When I write stuff and I help cast it, I turn away good people all the time. I may turn them down because this one's too tall and that one doesn't have a high enough voice or this one looks to old to match up with that one - there's a billion reasons not to hire somebody.
I believe that God felt sorry for actors so he created Hollywood to give them a place in the sun and a swimming pool. The price they had to pay was to surrender their talent.