I like to think that I'm getting wiser with age....
I started carrying with a 5rd 380 and didnt even OWN a second mag. A year ago I went to a 14rd 40, worn everyday in a close quarters environment.
I see no reason to handicap myself with an inferior firearm or inferior cartidge. The larger gun is easier to handle and shoot and has no problem concealing with my everyday gear.
If you believe that a 5rd wheelgun is all you need, I hope you never run into 2 or 3 BGs. one on one, you have a fair chance. multiple BG, you are in a hard spot. May as well give yourself all of the advantage you can!
Although in fairness for the small gun crowd, the last time I drew the conflict was resolved with one shot. But it was a 4-legged critter :-)