Man, ain't that the truth!
I am still able-bodied, though not as in shape as when I was playing foolish ranger games, but I am pretty darn vulnerable with my small children. Doubly so when I am securing them in their car seats.
Fight or flight? Flight is not an option with two small children, so if a criminal decides to target me & mine, they are getting a whole lotta fight.
When I was single, I was content with a pocket pistol. With my kids, I feel naked without a full-sized 1911 IWB, an extra mag, and the old pocket pistol.