I don't but have tried them. Along with SKS and AK The cartridges are not useful for my hunting, but are cheaper. The AR has adjustable stock length, a grip that feels more natural so can be used by people that are not " average" build. People mix up velocity, weight, impact energy not to mention bullet styles. And have no idea about how changing magazines reduces the actual rate of fire from the impossible numbers cited on tv that would require belt fed full machine guns
There is an agenda to take ALL guns in the long picture despite protestations otherwise. Since they cannot do it all at once (Soviet union, Hitler for example) they are instead getting the camels nose under the tent.
If you think you can completely trust the government and its enforcers give up your gun, knife, ball bat. On and on