Children are a known hardship, but you don't really see it because it happens at your co-worker's homes and it's deemed unprofessional to talk about it at the office. Also, it sometimes appears to be rewarding. Trust me, we're not cheating the system, you shouldn't be jealous. Every other country in the world has this "perk" baked into their laws of government. But because the US is so pro-corporation only something that is necessary to treat workers with respect gets lumped into the "perk" category with your free fitbit and monthly massages.