:cb2: The .22 is the best idea for learning to shoot well. Most people get automatics. My first .22 was a S&W 2206 .22 automatic. I lucked out. Didn't know what I was getting. Turned out to be a fantastic gun. Too bad they don't make them any more. However, now days I lean toward revolvers. All .22 automatics are finicky on what they like to eat. A .22 revolver is not picky at all. They will digest anything. It never jams. I have a Ruger Bisley .22, a S&W 617 (the best and most accurate), and a .22 Ruger SP101. It's hard to go wrong with any of them. Sticker shock my get you on a new S&W 617, but they are worth every nickel if you get one. Ammo is soooooo cheap, and like you said, it would be great to train your sonsand wifeto shoot with.
I found a used S&W M10 (.38 Special) that looked brand new, though it was made in the 60s. Some will say (I used tonot now) to get a .357 and shoot .38s in it. That way you have a gun that will shoot both. However, I have several .357s and all of them shoot .357s better than they do .38s. My M10 is amazingly accurate, and it's so much fun to shoot. Being a S&W, it has a fine double action trigger, and if you're going rabbit (coon, opossum, armadillo, cat) hunting, a .38 would be an excellent choice. So if your reason for getting the gun is to shoot .38s, I'd get a gun chambered to shoot .38s. Plus, .38 ammo won't break the bank. Especially if you get reloads. It's a great caliber for teaching the wife and kids to shoot, too.
Either one.22 or .38will give you hours of fun without pain or wearing you out. Have fun, and let us know what you get!