Stop inflating your contributions. Defending the country from what? There has not been any war and all you have done is to play pretend war. Even if a war is to break out, you are assuming overseas Singaporean will not help out. Wouldn't you think having someone in the US may be helpful raising awareness or influencing public opinion to help Singapore. As far as I am concerned, your contribution is zero unless you have actually fight in a war. You serve NS and so did I, and many overseas Singaporeans. Do you get gahman money from CPF, subsidized housing, health care, and schools for your kids, enjoy a safe and clean society? Well I don't get those benefits.
I don't know you so to I can only judge you by reading your post. From what I can see, I see someone who don't care about society, just looking out what's best for yourself. Just someone who is looking out for himself seeking less competition with jobs, COEs, and house. With that, I can only assume that you're not likely to be someone who would not help my relatives or friends. In fact, if I am betting man, I would bet that you're one of those kiasu selfish that I keep hearing
people complaining about.