It would be interesting to see how humanity would react if that were true. If people had to worry about their actions now causing consequences later for themselves and not just other people's children, I'd imagine we wouldn't be polluting our planet so much. Maybe it would also cause us to take expanding civilisation beyond earth a lot more seriously. Or maybe it would just make wars more vicious. It wouldn't be enough to control other countries, the goal would be extermination to make room for children.