It's not unreasonable at all. I feel the same way.
It's actually faster to drive up to a certain distance. say, 500 miles?
You don't have to get to the airport 3 hours early to find parking, pay, wait for a shuttle to the terminal cuz the lot is 2 miles away, sign in, wait some more. board, wait some more. fly next to screaming babies and BOB who takes up 3 seats and stinks of sloppy Joes next to you while mrs doubtfire plays... land (hopefully), sit there delayed on the tarmac, until you can exit the plane, wait for bags (hopefully), wait for the shuttle to take you to enterprise to get a car, do more paper work....
on the way back you gotta get to the rental car place 4 hours before the flight to return the car, wait for their shuttle to take you to the terminal, wait more at the airport, again sit next to BOB, land, wait for your shuttle to your own car again..