I totally agree. I have timed this experience though. My wife said she thought the buses were quicker so we gave it a shot. It took us 31 minutes on a Tuesday to get to the bus stop at CBR (going to the MK), get on the bus, ride to the park, and then walk over to the front entrance. The next day we drove and I timed it as well. It took us nearly 19 minutes to get in the car, drive to MK, park, catch a tram, ride the monorail over, and get to the front gate.
The other parks were a lot quicker since we did not have to cross a lake to get to the entrance, yet the bus ride times were close to the same as MK. And don't even get me started on the holy nightmare leaving at closing time can be with using the buses.
I'll take a car any time.