CAUTION: This is actually a ruse issue to attack and ban all semi-auto pistols and rifles. All semi-autos can be bump-fired without anything more than a finger.
And about automatic weapons anyway, why? I go to the local indoor range that rents them and muse at the people coming in and dropping $1,000 to fire one for a few minutes. At $0.50 to a dollar or more a round, it adds up really quickly. Maybe I count pennies and if I have to worry about the cost, just look elsewhere, but consider at 500 rounds a minute, which is slower than most automatic weapons. Using a 30 round magazine, swapping out fast, you get off 100 or so a minute. at $0.50 cents each, that is $50 per minute. Great for novelty but I'll stick with semi-automatic and hit the target where I aim instead of spraying the area. And have money to buy lunch or dinner afterward.
I used to own an ORIGINAL Browning T-Bolt .22 rimfire. Unfortunately it, like so many weapons, was lost in a boating accident but I bring it up to say that, for those who are unfamiliar, the T-Bolt used a bolt that moved straight back for extraction and straight forward for loading with no need to raise the bolt handle before moving it back to extract the fired shell or load another. I learned to shoot it by putting my ring finger on the trigger, catching the bolt handle between my thumb and index finger and simply rocking my hand back and forth. I could hold it against my hip and fire it so fast that it sounded like a semi-auto being fired as fast as the trigger can be pulled.