I only ever get the bus when I go to London (I don't have the luxury of that choice where I live) and I like it if you are lucky enough to get a seat. It's a good place to people watch. Plus you don't see half as much of your surroundings when you are driving.
I love the bus. I have just got my buspass and I go all over the county. Best thing so far about old age!! However, our buses are relatively clean in Cumbria compared with inner city ones (I think).
I like the bus...I can read while i am travelling and send texts/make phone calls like trains better though especially the one to north wales....lovely journey