Yes, public transportation blows a$ here in the states, especially in Atlanta, the mot pedestrian UNfriendly city we have. Try and take a walk around downtown ATL and you'll see what I mean. No sidewalks to speak of, homeless rooters on every corner and in the buses, and long distances from place to place make this a good city to drive a scooter or motorcycle in. Boston was way better with it's rail lines. For a uck or two, one can hop a train in Western MA and go into any area in the city with minimal hassle.
Not so in ATL; you have to drive to a park and ride lot, pay to park there, get on a bus full of poor people, and then endure a two hour ride into the third canto of Hell. Yucch...
Well at least you have Marta! That's not too bad and it actually is a great way to get to the airport. I've taken Marta from the Hartsfield Intl after landing around 5 pm., and took it to Buckhead. It was much quicker and cheaper than a taxi or any other vehicle transport.