It is a way to do things that are doable and needed. Unless you want an outright ban on all guns you aren't going to stop gun violence.
The issue is, what are these weapons purpose and why do they need to be in circulation.
You seem to think that status quo is acceptable because we can't stop it entirely. People also commit rape even though it is illegal. Should we just legalize it because we can't stop it completely??
Hand guns are the main culprit in gun deaths, but they are also popularly used for self protection. Hunting rifles are used for hunting.
Assault weapons are used for assaults and as toys. They have no other ideal functionality.
And I am sorry if you think I don't know what I am talking about. However, in response to your dismissive question it should be pointed out that an AR-15 is a type of rifle and the Winchester .308 is a type of ammunition.
Without you giving more information than "the rifle my dad gave me", or for that matter which type of AR-15 you are referring too, no one could tell you the difference.
I do have to say however, that it is not comforting that the people "in the know" don't know the difference between a type of cartridge and a type of rifle.
To the first point, and I will ask again, why can the "assault rifles" only be used for assaulting and toys? Why can't they be used for sport, and security?
To the second point, below is a rifle very similar to the one that my father gave me. He used it all through his 20's and 30's. I have owned it for about 20 years.
Looks harmless....compared to those big bad AR's doesn't it?