Couldn't agree more flopshot. The problem with kids and guns is like kids and transportation. When they walk, they're happy until they see kids on bicycles. From that point on, getting a bike is their only goal in life. When they have experienced the bike, they'd never go back to walking, but shortly after, they can't wait for the time when they can get a car. Once they get a car, they never go back to the bike.
I've found the same thing when training kids to shoot. The first time they shoot a single shot .22 is the best day of their lives.... unitl they see someone with a mag fed bolt action or semi. Once they get the taste of being able to shoot more ammo faster, they won't go back to the single - at least not until they get older like us
My kids started off single shot .22. Once they mastered that, I moved them up to a Savage Mark II, then the Marlin 880 SQ and now the Ruger 10/22. So far, the skills they learned with the single shot .22 have carried them through. Even with the 10/22, at least my oldest boy still focuses on accuracy over spraying the target with lead.
Next, I'll move them up to a bigger .22 like a .223 or 22-250 and we'll start the same cycle over again.