Earlier quoted context omitted.
You are here, so obviously you feel "good" enough and worthy to exist. With population control its always the "others" need to be eliminated. No one wants to start with themselves. Its an extremely selfish position really. Its also not very logically viable, since those that feel the world is over populated and kill themselves, will just be selected out of the gene pool. Leaving only those that want to live, procreat…
there is no need to kill oneself. but making a start by not choosing the ego-project of procreation would already make a huge difference. if people really want to have children there are enough orphans out there and which would make the world better by raising them instead.
In general, it is procreation that makes humans think about the long term. The truth is, no matter what you do, you will be dead in a hundred years. Wanting to leave the world a better place for your children and grand-children is a much more powerful motivator than abstract philosophical principle.