Every single member on this site should own an AR. In any caliber, even if they never use it.
Just so happens that an AR in 7.62x51 is the king of AR's. I also want one in 338 Lapua when there are a few more manufacturers making them. When money permits I will own one in 338 and 308 because my .223 and 300 blackout need to socialize with more of their own kind.
The more people that own them the harder it is for our retarded government to make the laws relating to them more restrictive. You are showing your support for our rights to own them and making it harder for the government to take them away from law abiding citizens who legally own restricted firearms.
It has nothing to do with practicality and everything to do with supporting the shooting community in Canada.
And when the zombies come you'll be glad you have it

LOL.
Same goes for pistols.