Inconsiderate/rude/mean people in general. I hate it when someone is outright rude or mean to me or someone else.
As a woman I do not automatically expect a man to hold a door open for me (though it is a nice and very much appreciated gesture -- well done to all of you guys who still hold the door open for a lady
). Although when I am carrying a baby, handling a toddler and/or pushing a stoller, common courtesy would dictate that you hold the door open for me. I am not just talking about women with children. People should hold the door open for 1) anyone who needs help, 2) the elderly, 3) anyone whose hands are full and 4) anyone who happens to be walking through the doorway behind them. It also bothers me when I go through a door and I catch the door in one arm (while usually holding said infant/child in other arm) for someone behind me so they can grab the door and they waltz through like I'm the door man without so much as a thank you.
It also drives me crazy when I go to check out at a store and the clerk doesn't acknowledge my presence beceause he/she is too busy talking to a friend. I usually make it a point to very clearly say "thank you for being so pleasant" when I get ready to leave.
Or when you let someone in line in traffic and they don't wave. Common courtesy is in short supply lately. Although I must say, people are much more polite here in NC then they were in DC
Ahhhhhh I feel much better now -- thanks!