Think about it, how you'd feel if someone used the name of your parents or your best friend to swear with/against. You'd hate it. (I know, because I had a friend who used to scream "Bloody Nora" when she got upset. Nora was my mother's name... I told her time and again, to cut it out, but what can I say, she was a bit dim.
People swearing by Christ and God are either as dim as my friend D., or they want to offend Christians. Either way, they need to grow up!
"As for taking it on the chin", why should they have to?