Yes, involving your own child in the delusion that you are their father when you gave birth to them - it's kind of selfish isn't it? It a goes back to everyone having to play along for it to work doesn't it?
And I'm sure people will compare this to homosexual parents when it is totally incomparable.
A lesbian or gay couple who have a child will presumably be open with the child about how they conceived. That one of them is not their biological parent etc Everything is still factual and out there, no one has to say anything that isn't true.