Today, while I was trying to explain that the most important safety is between your ears, a nearby woman exclaimed that she didn't want to hear any of that crap, because she'd had a husband who shot himself in the hand, and he knew about guns. It took 9 surgeries to get his hand fixed, and no matter how safe you are, you need as many safeties as you can get.
I held my tongue, though I wanted to ask her whether he pulled the trigger with the muzzle pointed toward something he wasn't willing to destroy. I knew the answer, of course, and she would not have been pleased to provide it.
How many safety devices would it take to keep that gun from going off? Just one--keeping the finger off the trigger. No grip safety, trigger safety, or manual safety work to prevent misuse.
Sure, buy a gun with several safeties. It won't hurt anything, and you might just feel better. Or buy one without so many extras. It'll work, too. Just remember to point it safely, keep your finger off the trigger until you're ready to fire, etc.