What is it with Christians?

What is it that makes them push their bigoted, chauvinistic, narrow-minded view down everybody else's throats in some bizarre misconception that their's is the only possible way to live?
Perhaps I am wrong and this only happens in predominantly english speaking countries with a high caucasian demographic.
What about it people? Do you get 'born again Bhuddists' or 'new age Shinto' or etc leaping out from all over screaming that they have the only solution to the worlds problems?
Seriously, how many of these so called Christians actually have a 'christian attitude' i.e. turn the other cheek, help your fellow man no matter what their race/creed/colour?
Also, how many of them actually bothered reading the bit in the Bible where Christ instructed his followers not to worship him but his Father?
Not being an actual student of comparative religion myself, I'm not sure how many other religions there are out there with as many or more rewrites and rewordings of their prime holy book. As far as I know, neithor the Torah nor the Koran have been butchered about as much as the Old (torah) and the New (assorted stories wrtten over several hundred years) Testaments of the Christian Bible. (Not even going into the previous editing done with the Roman Catholic, Protestant, Greek Orthodox, Russian Orthodox, Baptist etc variants).