no man has ever spent 18 straight hours getting kicked in the balls
Probably not, but you are in pain for way more than 18 hours!!

no man has ever had to have his abdomen and/or major organs sliced open and sewn shut after getting kicked in the balls;
Go look up testicular trauma, ruptured testicles have to be repaired through surgery sometimes multiple surgerys from the testicle not healing right...
there's no possible way on this earth that getting kicked in the balls is comparable to giving birth.
There is no possible way to prove that right or wrong. Trauma to the testicles can cause vomiting and fainting, testicular bleeding, it can cause you to be unable to produce sperm, etc etc so dont act like you can really know, they both sound equally bad

Birth has a purpose, getting kicked in the junk doesnt...

Like i said, giving birth is not a good argument here lady