For these people it must be something like placing a bat wing under the pillow. After all, they don't even know what science is. I'm fairly sure Ikta and his lost scientific brethren weren't studying such a field either. But yeah, he could be taking care of it and with his wits he should, but accidents happen.
Back in the day if you made a woman pregnant, you were supposed to take responsibility and marry her, whether you liked it or not. Under normal circumstances for a woman the choice was made by her parents anyway. That's why the suitor had to ask the father for the daughter's hand. If the father didn't agree and wouldn't budge, then that's it.