It’s not uncommon for this to happen in other species’ evolutionary history, either. Some speculate that birds , for example, developed feathers to stay warm and only afterward learned to fly. 

Monogamy is also common today, although this advancement is only recent in homo sapiens history. It’s advantageous to society because it allows each man to have a spouse. Other systems, like polygyny, were risky because they left some men alone. In this state, they don’t care as much for the future and are more likely to participate in theft, violence, and rape.