Hi...
My take on this question is that I personally need at least a couple of .22LR firearms.
I have had at least one .22LR rifle since I was 16 years old. I bought that Remington pump with the first paycheck I ever earned from my first job.
I bought two more .22 caliber rimfires just after I turned 21 years of age...one a Kimmel Industries stainless SA revolver and the other a Marlin lever-action .22MRF rifle. I think I paid $50 each for those two.
I never bought another .22 rimfire for 40 years until a few years when I bought a Henry .22LR carbine for my son, followed a year or so later by an H&K semi-auto carbine (again a gift for my son).
Finally, after threatening to do so for over a year, I bought a .22LR revolver for myself. I had planned to get a Ruger .22LR SA in stainless for squirrel hunting and target shooting. However, the best laid plans of mice and men sometimes do go awry...I rather clumsily stumbled across a Dan Wesson DA .22LR revolver at a gun show a couple of months ago for what I considered a good price ($475).
Despite the shortage of .22LR ammunition, my son and I have managed to put a few thousand rounds of .22LR down range each of the last two-three years. Together with the thousands of rounds of center-fire ammunition fired each year, I believe my son has become a very good shot because of all of that practice (due in no small part to the .22LR firearms).