I do agree ghost (about how illegal immigrants should be paid an equal wage)but what happens to an economy when there are too many people entering it at a large rate. I think in some ways immigration helps keep the economy stable. Although if society were converged that problem would be erased as the whole planet would be able to provide for the cause (tell me if this is going anywhere lol).

Armed forces are always needed as there is always malicious activities occurring but not aimed at countries where most of the people are innocent. If all countries were united this wouldnt be a problem.

I dont think society will be united for a long time (if ever) because there are too many nationalistic people, governments are too scared (fear of economic collapse etc), and lets face it society in general fears change (its human nature). Good idea but like other ideas to improve an areas (world, city, country etc) situation it needs a perfect society to work (capitalsim and communism are example of good ideas without the recognition that people arnt perfect).
Btw, you wasted 20 seconds of my time due to your avatar