to the point where I now think the world would be a better, safer, and more interesting place if the UN made economic immigration illegal

WAV - what you've done is obviously good for yourself; but it DOES NOT put you in any position to tell others what they should do nor yet pontificate on the broader issues of human migration & culture which really are too complex and vast an issue to be boiled down to the sort of simplistic sloganeering you feel somehow represents the best way forward for humanity. It doesn't matter what you think, WAV - so why waste time & energy that could be better spent elsewhere - such as learning new songs, or exploring the wonders of your Australian-English heritage, or even just joining your local morris side?

FROM NOW ON

Now lasts for all eternity, WAV - what gives you the right to speak of such things? Show some humility for goodness sake.