I am from the US and am living in malaysia at the moment and have traveled throughout South East Asia. I think the issue is not that our homes are built I efficiently, but that we just do not tolerate heat the same way that those in South East Asia do. We could open our windows and doors like they do in asia to create a draft and cool down, but it would still be warmer than we would like. Living in Asia is warmer than we would like in general.