The most convenient means of transportation in the city you live in

The most convenient matters of transportation in my city are buses.
First of all, these have far complex bus systems. I can go anywhere since a hundreds of bus stops exist whereas there are just two subway lines in my town. These are not enough to cover whole city.
In addition, Buses are cheaper than others. Daegu where i live in has a free-bus transfer system unlikely other cities. I don't need to pay additional fee while transferring.