Wow Luna, can't believe that this thread is still active. I am changing my vote - INFPs just aren't that introspective (too busy saving humanity, etc).
ENTPs don't agonize over self analysis - dominant Ne requires enormous energy to spin a spiderweb of intuitive connections. They certainly aren't going to spend months agonizing over the question of MBTI type.
INTP - why is it so hard to accept that? Since you're not Einstein or Marie Curie then you must not be worthy of the title? Don't forget, Mary-Kate Olsen is INTP, too.
Got any cupcakes?