I can understand owning a pistol for self defence, but what situation does a civilian need an assault rifle in? Surely it'd just get in the way massively in an

I can understand owning a pistol for self defence, but what situation does a civilian need an assault rifle in? Surely it'd just get in the way massively in any kind of home invasion scenario and if you end up firing it the bullet will go through 3 houses and hit someone's dog