My wife and I dread taking the MTR, especially during peak usage hours, as you have to be constantly on your guard against imbeciles hitting you with their backpacks, elbowing you, running over your feet with their rusty trollies, etc. There's also the noise (people carrying on conversations with other passengers seated across the aisle from them, using their mobiles as though they were megaphones or tin cans with string dangling out the other end, etc.) and stench (b.o., mildew, mothballs -- choose your poison). Then, when you get to your destination, you often have to knock down half a dozen people who aren't able to grasp the meaning of the arrows affixed to the platforms in front of each and every train door.
The taxis mostly stink to high heaven and the drivers are semi-suicidal, compulsive-gambling crooks who wouldn't pass a driving test anywhere else and who use the gas pedal as though it were the throttle on a rocket motor in a space ship (on / off / on / off).
Buses and minibuses combine the worst aspects of the MTR and taxis: crap drivers plus loads of people whom you need to be wary of.