Yes there is lots of room. There is plenty of food. But what kind of place will the planet be in 100 years on our current trajectory? Pollution is being done on a grand scale. Deforestation too. What good is it to have all that land when it's polluted? As the world gets richer and people consume more it seems clear to me that the present path is not sustainable.

In my short lifetime I've seen drastic changes. I've been to many countries and to many national parks. I've seen the degradation and I know it constitutes anecdotal evidence. In the 70s things were not so bad. Now, it's terrible. Trash a much more common sight in the ocean and in reefs. Micro plastics everywhere. Deforestation. We have room, we have food but soon we won't have a decent place to live in. It'll be too polluted

I'm not smart enough and don't have enough moral insight to be able to determine who should be gotten rid of as you put it. That's too great a power for me to responsibly wield. I don't think anyone should be gotten rid of. I think people should breed less. But even though I haven't enough insight to say how to get to the desired outcome, less people, I know that it's the outcome we need.