The better solution is to put the infants and elderly together and put them on slave wages and that frees up all the 'adults' in the room to go out and keep the world turning. Don't eliminate orphanages, make them bigger and staff them with the ancients ones too feeble to 'run and talk and shoot all at the same time' Basically following how whales and dolphins run their societies. Break a spoke in a wheel and the whole wheel is considered to be broken.