Do you carry an extra magazine? Why? Why not?

How many of you choose to carry a second (or more) magazine on your person? How many of you carry only your firearm's normal capacity. Regardless of your answer, what gun do you carry and what is it's capacity? (for science)​What is your reasoning/logic for your decision?​I recently started carrying (M2.0 Shield 9mm) and so far, have only ever carried the gun's 7 or 8 round mag + 1 in the chamber. I suppose it would be easy to toss the extra mag in my pocket, but I don't like having a lot of extra items in my pockets. Curious to see what the community does... via /r/CCW http://bit.ly/2vQcbWG