You are right, that the problem lies within. The problem is greed. Pure egoism. Our current system also bases on growth. But every mathematician can tell you,

You are right, that the problem lies within. The problem is greed. Pure egoism. Our current system also bases on growth. But every mathematician can tell you, that endless growth is not possible. The Earth can only provide limited resources and even now, the Earth is under heavy pressure because of the Human kind. We are able to exterminate humanity just be our greed. We need to change our system. I also wish a pistol on somebodies heads ... but I don't think, that it must be all humans. 1% of the humans would suffice.