I might joke about it, but I really think it's irresponsibly stupid to NOT know who the father of your baby is (unless you were assaulted).
Too many irresponsible motherfuckers out there (both men and women) breed unconsciously and then exert pain and suffering on themselves and their offspring.
Sam Harris once claimed that if we design intelligent AI to suffer, we're immoral and unethical. Um, Sam ... that already exists ... and every parent in the world is at fault.
Stephanie Si, your Happy Anti-Natalist, peace out.