would the world be better off if we all died?

[Dystopia]

90% of the worlds population live in fairly squalid conditions.
It is the greed of the other 10% which ensures that it remains that way. That's us, the western world, with our iphones, v8 cars, etc.
Greed is a normal human condition, it is a subset of our survival instincts. So for the foreseeable future, I can't see it getting any better.
Maybe in 1000 years or more?

First, do you think we can consider greed as a natural trait? I have my doubts if it is natural/biological or a social acquired behavioural trait. Second, it's not impossible to dream of a better world

So right now, If we killed all life on earth, how many billions will not suffer at our expense. I think it's a small price to pay.
I can't stand suffering. We have created a world where there is a huge net sum of suffering. By created I mean, those in power, have the power to change anything and everything but like all Café Christians, we choose the path of least resistance to our lifestyle.

So it's better to kill everyone and end suffering? Better than changing the system? By the way, applying your line of thoughts we could just execute people in 3rd world countries, no need to kill those who live with dignity. And why can't I live and enjoy my staying here just because others have it much worse? That's something I'll never understand. 'Hey son don't waste food, kids in Africa don't have any...' 'But dad, if I I eat my food is it going to make kids in Africa eat more?...'... Yeah right