Even if I wanted to be as selfish as possible and say "fuck it, kill the babies", it's still a bad position for me. Because SOMEONE has to clean up the dead bodies.
It's also very expensive to be underdeveloped. Simple things go from given to impossible problems. Things we take for granted, like sanitation, because insurmountable obstacles. Just ask any developing countries.
Less infant mortality is good, actually, because I like living in a developed country. I don't want to burn our tax payer dollars on burning baby corpses. I don't want to burn tax payer dollars on a stupidly volatile economy because everyone is dying all the time.