I don't know its just a killer driving home from that Dublin airport to anywhere past Belfast. I've done it once and i'll not be doing it again unless I stay in a hotel..... You need to be realistic no one will want to drive across half of Ireland after a transatlantic flight.
You need to be realistic and realise that just because you don't like it doesn't mean others won't too. As chuboy points out there are multiple bus options which may very well beat the CFN-DUB on price, timing and convenience.