My upbringing would probably fit in almost anybody's definition of 'normal'. In fact that it was so 'normal' that it is probably abnormal.
I had a mom, dad, and older brother. We had a dog, went to church (not every week, but enough that I knew what it was about), I played baseball and football, and most importantly I wasn't either physically, or emotionally abused by my family. In fact, my family has been extremely supportive, and we are still very close.
I actually grew up in an almost Mayberry environment (that is long story, but essentially it was an isolated small town where everyone knew each other). I also didn't really wet my bed much later than usual, but was potty trained later than what most people would consider normal (almost 4).
Yet, despite the extreme normalcy of my upbringing, I never really felt 'normal'. I've had leanings towards diapers almost since I stopped using them. I've become fairly successful in my adult life, and have a lot of good friends who respect and trust me, but have always fought self-confindence.
But I don't think my AB/DL desires have much to do with my upbringing. I was the youngest child, and my parents gave me a fair amount of attention (not over attention, but more than my brother). Even though I didn't have bedwetting issues when I was younger, I wasn't potty trained till nearly 4 years old. Maybe it was because I was allowed longer than usual in the 'baby' mode that made me the way I am.