In theory, a very valid point. In practice though, humanity is very varied and is of a thousand inherently contradicting beliefs. Unless we find a way to ensur

In theory, a very valid point. In practice though, humanity is very varied and is of a thousand inherently contradicting beliefs. Unless we find a way to ensure that local interests ( that the locals have worked so hard to build and conserve ) are protected from herding behavior, local communities/values don't get destroyed just because they got slashdotted etc. this is not possible at all. Not to mention what over-population and sudden influx of a huge # of people can do to an area. This is going to sound like a military hiring rhetoric but, there are many many people out there who would love to tell you what to do/how to live/what to eat etc. and hurt you if you don't follow them. Societies normalize around local 'wackiness' / 'norm' so to speak. Allowing free movement would mean losing those cultural identities per se and I don't think we are ready for that yet. Right now, People who want peace are the ones who should be willing to fight most for it. FWIW - I am an immigrant. I have seen the other side of the world so to speak and can totally appreciate why people want to move to USA.