Refers to that aspect of ecology which takes into account the generative decisions of a person for the drawing up of their overall ecological “balance of loss and gain”. Important factors in this ecological balance of an individual are the decisions which they take regarding whether, or how much, meat or animal products they consume, whether or how often they drive a car, whether they take long-distance aeroplane flights and so on. Not incorrectly it is said that a person’s decision to become vegan (i.e. to forgo the consumption of all animal products) is the choice which will, above all other possible choices, have the most positive effect on their individual ecological balance. There can be no doubt but that a vegan lifestyle leaves a smaller ecological footprint than even a vegetarian, let alone a meat-eating one. But too little attention is paid to the fact that the decision to forgo procreation is one that leads to a more positive individual ecological balance even than the choice of veganism. People for whom a vegetarian or vegan lifestyle has a high priority are well advised not to procreate because procreation would leave open the question of whether or not their children or grandchildren would also take the decision to forgo meat and animal products.