I'll admit, I'm a bit biased. I like the buses. Before I became a CM, I always drove from the resort to the parks. When I was a CM and wasn't working but staying on site, I started taking the bus. Now many times it was because I knew the driver and could chat with him/her. Now that I don't work there any more, we mixed bus with driving and more often than not, just take the bus.
It's many times easier and usually doesn't take any more time. The only place I would drive with any regularity was DTD but until the construction is completed, I will take the bus.