I can't say I'm proud to have been born an American, as I don't believe I had much say in the matter (though who knows, we may have). But, can I say I'm proud to be an American? On a personal level, yes.. I believe I can.
This country was founded on the values of individualism and individual achievement (among other important things), which is something I can agree with wholeheartedly (and I think many INTJ's would). I'm not particularly fond of what my country has been transforming into, so I do get involved in the opposition. I am proud of the efforts I have made so far, and will make more and more efforts in the future.
Now, I view "love" to mean that you strive to help something or someone grow, not the "I'm happy soandso does so much for me" line of reasoning. I guess my question to you is, in that context, why don't you give a crap about your countries?