I can definitely relate to this article. One of my best friends always tells me I apologize all the time.
I just don't like people to feel awkward because I often find myself in awkward situations so I try to make others not feel uncomfortable. For example, I might have a party in the coming months but since I have friends from different groups who don't necessarily all like each other, I'm having second thoughts about the whole idea. People tell me they'll get along for my sake but I'd rather have everyone comfortable with each other so that the event can be as successful & fun as possible.
Back to apologizing, I just don't like to have uncertain cold feelings with others. If I do something wrong, I immediately say sorry because I want to know that the person & I are still cool with each other & that there are no harsh feelings between us. I do not like conflict, criticism, & I like knowing where my relationships stand so apologizing is my natural way of putting everything back in balance. I want my relationships to be as warm & open as possible.