I really don't understand the obsession with not driving on a Disney vacation. Is it because people don't want the expense of a rental car if they are flying but don't want to say that, so Disney buses are given Major Benefit status? Driving (or cooking for that matter) doesn't mean I'm not having a vacation to me. I drive and cook on all of our vacations, and it has yet to make any of them feel less relaxing.
Buses are not a plus for me at all, and I fail to see how they are quicker than using my own vehicle. Due to what you describe. When we stayed at WBC, it was under 15 minutes door to door every single time. I'm normally all for public transportation, but not at Disney.