While I no longer carry a handgun for protection (CCW permits are pretty rare things here in Canuckistan), my feeling is that one should do enough practice to use any tool within its limitations.
My knives are only good for contact range, I don't practice throwing them, because that's beyond my limitation of their use.
The FN Baby (.25 ACP) got practice use from contact to about 5 metres, The PPK (.32 ACP) got shot regularly to 25m (and was surprisingly accurate), the P35 (9mmP) regularly saw targets to 50m, even though it's actual accuracy was less than the PPK, its power made it more capable of being called-on to reach the longer range. The Security Six and the GP100 that followed it regularly whacked bowling pins at 100m.
So the .357's fired several thousand rounds per year, the P35, 1500 or 2000 per year, the PPK, maybe 500-to-800 and the Baby, perhaps 200 per year
My standard of accuracy was the bowling pin, being a fair approximation of the CoM of an adult.
"Those who have long enjoyed privileges as we enjoy, forget, in time, that men have died to win them."
Franklin D. Roosvelt