Oh yeah.
My genitor didn't want to see my any more when I was in kindergarten because my mother rightfully asked for more child support. I didn't see him for about the next 10 years. From then on I had a somewhat loose distant relationship (or lack thereof) with he apparently didn't like. When he went abroad last year, he stopped paying child support, left without any contact information and insulted me personally as a last act.
The good thing is, I never minded growing up without a 2nd parent. My family was always complete and normal.
I didn't know that others minded, until in grade 5th a girl who was my bully got mentally ill because her parents were divorced.
I noticed I am still slightly put off at the idea of mother+father+child. It's wrong to me, I think family is mother or father+child. Talk of autistic rigid thinking here! Just last week there were quite many people on my job introductory seminar that had such families of 3 members. And I thought it was odd that anyone had 2 parents.
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Autism + ADHD
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The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. Terry Pratchett