He is entitled to his own opinion. I am glad for the four children I have, who I expect will be net contributors to the well-being of humanity.<p>AFTER EDIT:<p>The one reply to my comment here asks a pertinent question, which I hope I have given an adequate answer in a new reply. Meanwhile I will revise this comment to note that, as a subsequent comment has pointed out, there are already many countries in the world with negative population growth and a likely trend that the entire world will reach a peak population and then begin to have declining population while my children are middle-aged (and when I may, perhaps, still be alive). So, yes, RMS is certainly welcome not to have children if he is concerned about what bearing children might do to his family life or to the world as a whole, but I hope HN participants will be open to the possibility that some people choose to have children with their eyes open, knowing the trade-offs, and have a channel through having children to help you, me, and the whole world.