I really don't think that age bothers them at all.... While deadheading last week, a 52 years old captain told me he had an interview set up with DAL. He spent a vast majority of the flight sharing what he did to get it and how much he loathes the "lifer" mentality. Very motivated guy.... It also seems that they also hire military pilots who are near 40 years of age and older. I am noticing that many of the older captains that I fly with are not as motivated to leave owing to kids and other priorities which consume their time. Meanwhile the younger regional workforce on a whole seems much more eager to leave.... Not a single one of them whom I have encountered wants to stay at my regional. Also I am not sure where on the app that it even has a place for age.... How would DAL even know how old we are?