I think western countries are not representative of the world as they represent a small minority of world's population (10% or so). I have read some prediction

I think western countries are not representative of the world as they represent a small minority of world's population (10% or so). I have read some predictions about world population continuing to increase to around 12 billion and stabilising at that number. Let's say that happens. Then you run into the problem of people in western countries consuming many times more resources and energy per capital as developing world. Then in order to avoid climate catastrophe it would mean you have to reduce standard of living for the minority that consumes the most fuel and energy, also standard of living of those in developing world could not catch up. Basically the argument I'm trying to make it that it won't be sustainable to have 1 or 2 cars per family like it is normal in the West, and other similar luxuries.