The odds of you actually requiring the use of a gun have got to be about on par with winning the lottery. Aside from that, IMO, carrying has more cons than pros...what if the "bad guy" gets your gun? What if you kill the person? ...you're probably going to jail whether he was a criminal or not.
What if you mistakingly shoot an innocent bystander? Aside from that, during a normal altercation with police (traffic stop for example) they're going to be alot harsher with you. In almost every scenario I can think of, carrying a weapon would only escalate the situation. I'm all for freedoms and guns...but carrying a weapon on a daily basis seems like overkill to me. Ofcourse, that's just my opinion....which is based on the my 24 years of life where I've definetly been in some situations....but absolutley never saw the need to use a gun.