i expect a caliber “flame war” to commence in 3, 2, 1… so i will get a head start.
for a good many folks, perhaps of a certain age or with some infirmities, which makes them a softer target, well-practiced, accurate and reliable 22lr firearm can serve a useful defensive purpose.
soft recoil, soft on the wallet, 22lr makes lots of practice fun and easy. more practice breeds confidence and “makes perfect.” absent concussive shock waves, shrapnel and proximity fuses, only hits count. unsure deployment, spray and pray, inaccurate & unpracticed shots put the innocent at risk.
the task of a normal civilian’s defensive firearm is most often to break contact with the threat to “get off the ambush’s x.” if one’s most likely threats are a 300lb maniac methhead or a gang-banger crew of home invaders then indeed one needs stronger tools.
22lr is a perfect starter and learning caliber. if one isn’t a soldier, cop, guard or big game hunter, and is a normal civilian suburbanite, a 22lr firearm can be one and done too.