I certainly agree, I would like people's lives to be healthier. Men and women should have access to birth control, better nutrition and increased life spans. I would agree there is an upward limit to how many can have the 'ideal' home of a 2 car garage/home and land, as there is limit to spreading out. (of course, if we eliminated cars and freeways and warehouses, there is suddenly much more landscape for people to occupy and tend to.) If we used tech wisely, we could turn deserts into lush landscapes.

I would say, just at our present level of technology, there is a optimum sustainable population limit. Improvement in technologies across multiple domains would make it possible to support more human life, without half as much present negative impact. We're just not employing technology in a wise way. Population growth, in practically all the first would countries has been on the decline, so many believe we're already doing the curbing you favor- which, too, will present it's own problems as we stop replacing people. It also makes it harder to sustain elderly, because welfare was predicated on a larger base of workers. I am simply opposed to accelerating the curb.

Saying curbing population growth is not saying kill off half the population; I hope I made that distinction clear in the article. I apology if that was better communicated. Killing folks is just wrong. Wishing people dead, wrong. Wishing people wouldn't have children, or telling them when and where and how, I am opposed to that philosophically, but there are countries doing that and they seem to be doing okay- unless you consider aborting female fetuses, or killing babies at birth because they're female so they can try again in favor of male children okay. That kind of feels evil to me, too. Of course, designer babies will allow parents to chose gender, eye color, intelligence, so that may happen, too. This may be a completely different conversation in 20 years.

Anyway, my thoughts are with the right tech, appropriate distribution of resources, we could more than double present human population and still make Earth a virtual paradise. Resources are only limited when technology and imagination are limited.