The ethical value of omissions is widely underestimated. This may have to do with the fact that we take it for granted or as an ethical standard setting that one must not become active in such a way that other people be harmed. We praise people who do something for the benefit of existing other people. Most of us, however, would not praise someone who had decided to not procreate or someone who had revised a former decision to procreate. All this in spite of the fact that a decision to not procreate is an omission which goes along with there being at least one person less who would see her pets, friends, relatives or parents die before the person herself would go through the experience of declining health and dying (to mention just a few bad things).