True, but it takes around 45 minutes to prepare a plane for flight and about 20 minutes to put it away. Also, you have to drive to and from the airport. Planes are incredible, but you have to fly pretty far before they're a timesaver.
The only really time consuming part would be making and filing a flight plan. If you've done the route multiple times, you already have the flight plan and if you're operating under VFR (visual flight rules), you don't need to open/close it.
Source: I'm currently a student pilot and have done this process many times.
There's always a bunch of dealing with cranking open the hanger door with the winch, dragging the plane out, checking that there is no water in the fuel (both tanks), transferring the stuff you're bringing with you from the car to the plane, getting into the seatbelt, plugging in the headsets and checking that they're all working, talking to the tower, taxiing out to the runway, waiting for a plane or two to take off, and then actually taking off.
Anyway, have fun flying.
I understand they get very cranky if you try to take off or land too close to sunrise or sunset.