Yep, it's a southern thing I guess. The term My Wife sounds like a possession.
Nope it is a practice used around the world it seems.
My Boss was a Hindu born in India but raised in Kenya. He had a very interesting life and had married a woman his family chose for him. Seems he had never met the bride until the very day they married. He emigrated to Canada and lived there when the family showed up with this strange woman. He had just graduated from college and had a good job. After a year or so he was transferred to a Canadian plant in the USA, both became citizens and settled down to raise a family.
The baby's came, one boy, one girl and as he had chosen to live in an area of other Hindi and commute 50 miles each way to work , he and wife had the task of raising the kids as both Americans and as Hindi.
About 10 years later his family finally came to visit -------They it seems were amazed that he called his wife Momma and she called him Daddy. How he laughed as he recounted this story, Seems that when the baby could talk they would be directed to go see Daddy or go see Mommy, through the years they both began to refer to each other as Daddy and Mommy and the nick names stuck..
Now, to My wondering is why men often pick nick names for their wives like Babe or Honey, Sweatheart but seldom use their given name.
My thinking is that the male even after 40 years of marriage may call out the wrong name under stress. So they call their wives and girlfriends a generic name. They use their name when speaking to others but face to face it is ------Baby, or something non personal. Can't get in trouble with calling out the wrong name, unless you call a girlfriend Momma.