There seems to be this ego driven goal of becoming an "all jet airline." See Comair, Coex, etc. I just want to work for an "all profitable" airline. Some markets will only be profitable with props. The flying public would prefer jets but also refuses to pay the ticket prices that would be required to support a CRJ on a 400 nm twice a day route. bombardier has reported increased sales for their Q series props after last summer so it looks like that trend is happening a little bit.