What do you think about the terms Baby Mama and Baby Daddy?

I just hate them. I wonder who made them up? They sound so uneducated, unthinking, and lower class to me. It is not a judgment about single parents, I am only talking about the terms. It connotes to me the parent is not very interested in their child nor committed in any way to the other parent. That the child was not planned and the baby daddy or baby mama just exists, getting credit only for the biological relationship.

I ask because I just saw on my facebook a man write that Sally is the best baby mama ever. It took me a little aback, because I think of the term so negatively.

Do they sound badly to you too?