Not going to read the 3 page thread, because I've heard it all before.
I carry, every day...the only time I disarm myself is when I get out of my vehicle at the office (boss got real nervous when I told him I had a permit and would like to carry while on the job...driving vans with the word "Audiovisuals" on the side tends to make us targets for thieves/carjackers), or when I go to a property that has a sign posted (like the Coors brewery in Golden) that I can't carry, or the prohibited places like courthouses, etc...)
I carry for the same reasons I'm positive have been mentioned in this thread already: there's a carry law in my state, criminals don't obey laws so I'm going to protect myself and my wife, and honestly it's made me a much calmer person...I don't get upset in traffic anymore, altercations on the street I just shrug off, etc...
I'm trained with my carry weapon, among others, I hope I never have to use my weapon, but if I do I will be ready, pretty simple decision for me.