I carry anytime I leave the house. Even if I am going to a place that won't allow carry and has metal detectors, I disarm in the vehicle and go in. There have been maybe two or three times I forgot to strap my weapon on and I felt completely weird about it.
To the original question. I have heard a couple reasons for not carrying. My favorite is the folks who say they carry when going into a situation that might be dangerous. To this I always inquire as to why on earth I would want to intentionally go into a dangerous environment, armed or not. I will never get over how anyone thinks they can predict when some nut is going to start randomly blasting folks in public. Lately, it has been easier to get people to realize that self defense may be required in any location... Even theaters, schools and malls!
The second excuse I hear from my beloved offspring is that they know I am armed so they don't have to...
. This one makes me nuts!!!
Oh... Here is a good one. My brother was visiting from Ohio. He has no CHL and is retired military. 25 + years doing everything from sniper type stuff to recruiting. He saw me stick my holster in my pants and says to me... Oh good, your armed. If something happens and you lock up, just toss me your weapon and I will take care of it.