I do it because I want to because I want to be polite. My actions towards others usually isn't dictated by whether or not they were nice to me first. I was taught well by my dad that I should always care myself a certain way whether or not people were watching or how they are acting. I fully believe in acts of random kindness whether holding the door for strangers, sometimes going out of my way to do so, to saying bless you after someone sneezes that I don't even know,to making sure someone hears me say excuse me if I bump into them to learning people's names that I will never see again. There's nothing more rude than saying "Hey you...."