Why are you not voting for Ron Paul?

So after months of careful research and fact checking in choosing my 2012 presidential candidate, I've come to choose Ron Paul for many obvious reasons, and I don't understand why anybody would choose someone else. especially newt grinch or rick scrotorum, I mean...where the hell did those guys come from!? However, I believe that you should be able to choose and vote for whoever you want, as long as your choice is an educated well thought out one. and if you are austrailian or some other country that isn't voting in the us pres election, then all i have to say is that you are very lucky, and goodnight.