There's absolutely no practical reason for anyone to own or possess an assault rifle outside of military service. Even then it could be argued that it's not that necessary either.
Handguns for personal defense, shotguns and rifles for recreational use.
If anything, the ones that let the guns out into black market situations need to be held accountable.
The typical response is: "Assault Rifles
are illegal". The definition for Assault Rifle being a weapon that has select fire, typically capable of burst or full automatic firing modes. These are only in the possession of the military and some law enforcement agencies and are illegal to own outside of commercial purposes (say a gun range that wants to let you rent out an SMG/M16 for use on the range and only the range).
But I do understand that you meant AR-15's and in that sense, I do agree with you. There is no practical reason for anyone to own or possess an AR-15 rifle or something similar to it. You can hunt, defend yourself and use other guns for the same purposes as an AR style rifle (some would say they do the job even better). But then, there's no practical reason for anyone to own a Ferrari now is there? Thus, just because there isn't a practical reason to own it doesn't mean it should be illegal.
As long as
any gun exists, there will be one person who will want to turn it on another person. You take away the guns, they pick up knives. You take away the knives, they pick up the next most available tool that can be used as a weapon. The violence never ends, the name just changes.
You create a culture of peace and properity, understanding and tolerance, and you can sell all the guns in the world you want because nobody will use them against their fellow man. Until that happens, banning a certain type of gun because it
looks like the kind used in the military is just a band aid to make people feel better about themselves and a slight against the 99% of AR-15 owners who don't go around shooting people with their guns. It also sends the message that you can overcome an entire democratic system and make lasting changes to laws that affect millions of people with one simple act of gruesome violence. I have no desire to empower this monster.
Besides, if you really wanna save peoples lives, ban swimming pools.