Just what I need in a firearm. One more area that can fail epically. Also yet another battery to carry and eventually run out of.
Call me crazy but none of my firearms accidentally go off.
I understand there may be times when the use of gun to harm another human is necessary.
However, there are perfectly normal situations where you own a gun and this technology is perfectly acceptable.
There's a rather large contingent who really only use a gun for recreation. Perhaps they hunt. Or shoot targets (paper, clay. metal, whatever). They don't need a gun for constant companionship or ready access, they just have it for fun.
Perhaps after a day at the range or after bagging some animals, they head to the bar. Well, the gun's not put away, and there's a risk of your vehicle being broken into (actually quite common in the city). Well, it's one more thing that would make it worthless to someone and one less gun for druggies shooting at random people or whatever people do with stolen guns.
Yes, some people want it for protection. Others want it because they look cool (there's more than a few people who buy an AR and load it up with optics and grips and other accessories, only for it to sit on the shelf because they never have any intention of shooting it - just that it looked cool in Call of Duty and they wanted it).
Guns are versatile - there's lots of uses for them. In places where they're regulated, well, you often don't need one for protection but can often own one for recreational purposes.
So having the option makes sense - if you're going out to use it, you charge up the batteries and be done with it.
(Off-topic - why is it the real gun nuts take offense when they evacuate and leave guns out in the open, unguarded in an unlocked house often visible from the street, and the police come around and put it away for safe-keeping? I mean, is it somehow more offensive that the police are holding the guns for you (with a promise to return them) than if some random stranger decided to go and rob you? Perhaps it's less offensive if they were "stolen" by the police? The guns were right there waiting to be stolen, after all. Anyone else could've done it had the police not swept the area for items people may leave behind that are valuable)