This is why I am in the market for an AR-15 (Windham Weaponry MPC).
The perp won't walk away.
Kind of hard to fire 6 times with a 5-shot revolver without reloading. Sometimes a woman with kids grabs what is convenient, and perhaps the .38 was convenient for her to handle. Easy to have within grabbing distance around the house, on short notice.
A couple of head shots will finish the job, even with a .22.
Remington 870 with a tactical stock. Even an 11 year old girl can shoot it, and the perp will not be having a nice day.