Yet even European lifestyle is anything but sustainable base on IPCC report.
If we had more localized economies, there would be less need to transport all sorts of goods across the world; and there would be more employment. Redundancy would be beneficial to local cultures, as it encourages local autonomy. Instead, we have increasing centralization, which has yielded the same degregation with increasing scale. Maybe we need to rethink some of our presuppositions.
International trade is also a strong check against war, so that is something to consider.
Not necessarily true in all cases. Globalization is more efficient in transferring wealth, power, & information from small entities to large entities. As far as advocating for, providing value, & enriching local communities, naked Globalization has had a dismal record.
Good fences make good neighbors.
http://necsi.edu/research/social/scienceofpeace.pdf
Re: the check against war, that is also something to be questioned. We have continuous "low intensity" warfare against populations around the world, where modern weapons are used against civilian populations. This includes biomedical technology in favor of traditional food & medicine.
Also consider that the conditions for the major world wars (& the cold war) were created by globalists who operate trans-nationally. Something to consider...