I don’t think it’s some latent psychological issue. I get along great with my mom, and I’ve never felt any resentment toward her. I’m also not bothered by words like mom, moms, mother, etc. I don’t even mind when my sons call my wife “mommy.” It’s just that one word, “momma,” that bugs me. I wish I had an explanation.
I hadn’t thought about that one. I occasionally use the word kiddo, but only to say, “hey kiddo!” I never use it to talk about my kids, like “we took the kiddos to the park yesterday.”