Roads have to be in better condition to take the buses and coaches. Increased transit usage reduces numbers of vehicles on the roads, decreasing congestion and improving travel times. Pollution is decreased.
If you like driving you should heavily push for more public transit, and persuade everyone to use it, while you continue to drive your car.
There is zero transit where I (and many other people) live. The nearest bus is over a hundred miles away. Street cars? Been on a couple in my life. As far as I can tell, tax dollars ear-marked for transit go into a black hole.
I don't mind contributing to "the greater good" or "global society", but don't expect me to both subsidize transit and pay a premium for my only mode of transportation. Local problems need local solutions, but there's so much NIMBYism.