I agree that we shouldn't insult our opponents (it does detract from the strength of our argument, no matter how undeniable it is - plus there's no shame in being the bigger man - or woman), but do not for one second expect to have this courtesy returned to you. If you're lucky, scoffing and disrespectful chuckles will be all you face.
I completely agree. Although I do think if you gently confront someone on their behaviour you'd be surprised. My favourite moment was dealing with a gentleman who was being very impolite towards me in a condescending way - not explicit. He was a Christian and he said something fairly mocking - something to the effect of "Aren't Christian girls like you supposed to be submissive?". I heard my husband take a sharp intake of breath wondering what my reply would be. I could hear him change his pace as he came forward and was going to interject. All I said was smile brightly and say "Yes, I am submissive but I am submissive only to godly men so I suspect you might continue to be dissatisfied".
The response I was thinking of was more curt and pointed but that reply was much more effective.
And, sorry to be dense but I don't get the bus comment.