Re: When shopping, I'm always saying SORRY !!
I think it's better to be a sorrier than to be rude or sarcastic.
Everyone can make a mistake and be in someone's way, for whatever reason, and they may be distracted by a worry or something.
Even if they are just being plain rude, I wouldn't want to lower my standards to be rude to them.
Anyway, I feel it's better to give a good example than a bad one, and to be in credit for when I'm worrying about something, get distracted, and forget to say excuse me!
So I shall probably carry on saying sorry when someone bumps into me!