Probably about something not at all controversial that wouldn't get people's blood boiling.
Like
^My wife didn't want any more children because she had [insert severe medical issue] with the last four pregnancies and said that she couldn't cope with any more children. However, I am from a big family, and it's very important to me that my wife provides me with at least one more child, because she's beginning to talk about going back to work, which would be a personal inconvenience for me as due to a bad childhood I like her at home cos I have slight trust issues and like to know where she is.
Seeing as I pay for everything I think it's really my decision on how many more children we can afford anyway. Through sheer luck she got pregnant again when I "accidentally" tore the condom. Now she is saying she wants an abortion and I am outraged. Surely this is at least half my decision? Surely, as the father, my signature should be required before she should be allowed to go ahead with anything? I am trying to emotionally blackmail her into continuing the pregnancy, but she has broken my trust by getting her friends involved.
If she doesn't want to keep the child I have told her that if she could just incubate it and give birth to it, then I would look after it by giving it to my mother to raise.
What can I do to make her continue the pregnancy?^
I think that ticks quite a lot of the boxes
Otherwise something short and sweet like
"Both my wife and my mistress are pregnant. Which one do I stand by, or how can I convince one of them to have an abortion"