I don't think it is done in disrespect either... it is all how we were brought up. Some would look at someone who responds to everything a person said to them as having to have the last word.. You just never know... it is all in how we are brought up.

Never called a mother in law Mom either, my daughter in law don't call me Mom.. my feeling are not hurt, she has a mother is how I see it. She does address card and stuff to "Mom" and I sign the stuff I send her as "Mom". She talks to me about stuff she could never talk to her own Mom about and that makes me feel better than her ever calling me "Mom"..

Here's a funny for you. When I first came to Louisiana and married, my mother in law hugged me the first time we met.. I was horrified! What was that woman doing hugging me?! She did it every time we saw each other and it took me YEARS to be comfortable with it.... it is a southern thing, nothing I was brought up doing. After awhile, I came to love those hugs from her and other southern people and now I am the one that hugs everybody first!

Really, it is just what you are brought up to do or not do.