I'm gonna guess you're being sarcastic, because nothing you said is true... except for the triplet relationship being an almost impossible thing to happen.
OK, show me.
There's 3.82 billion females on Earth, now many are children I guess but there should be plenty over 18. Let's say 2 billon for arguments sake, if 0.001% of those women wanted artificial fertilization during their prime (28 years old and under) , there should be around 20k women in their prime that became single mothers via artificial fertilization, so show me.
I would be fucking surprised if there's even 100 young women that used artificial fertilization to become single mothers, and even in those very few cases, I bet there's underlying conditions like diseases or stuff like that that forced them to get pregnant if they wanted to be mothers at all.
So not by choice at all.
My first son's mother is a single mother by choice. She just wanted a kid. No relationship, no attachments, no involvement from me whatsoever. Just a kid. And she isn't alone in that.
I'm gonna bet she was over 28. If she is, then you aren't refuting my point whatsoever.