> In my experience, the bus is not a nice experience. The bus feels dirty, unsafe and hostile.

This depends very much on where you are in the world.

Full disclosure: I have visited a lot of cities/countries, approx 70k flown miles last year. I almost always try to use public transport where possible.

The last "not nice" experience in a bus was in SFO, travelling back to my hotel from the Cathedral of Saint Mary of the Assumption. Make of that what you will.