Well, you're sulking rather than discussing, but I said I'd answer.
Obviously because each rich person does many times the environmental damage of each poor person. You can google yourself, but regarding carbon footprint:
Perhaps you're suppressing some guilt from treating your slaves badly? That is quite the odd comment above...
What a boring and single-tracked moral system and metric of goodness to reduce a person's worth down to the amount of carbon they emit. Such a pessimistic, lazy, and unproductive world view too. No wonder nobody wants to get aboard your climate death cult.
I'll certainly answer, but you leave me puzzled:
You initially wrote that the 'world has too many people'... given your last comment I have to ask: Why do you think the world has too many people?
Sort of, but far better for the rich to die, not the poor.