I find Lack of Personal Responsibilty offensive
There are few things in this world that really turn me off. People who can't seem to use common sense and those who can't be bothered to read make the list. However, there is one thing that offends me more than all the others.
Lack of Personal Responsibilty
If you make a mistake, do something wrong, hurt a person or some other thing that has negative consequences: Take responsibility for it.
One thing that will always turn me off is when people refuse to or just seem oblivious to the consequences they create. Be a grown up. Take responsibility. If you made a choice that has hurt someone, then be sensitive to that hurt.