However, I didn't feel like I understood why he needed that gun. Is he a hunter? Does he own his AR-15 for self-defense? As far as I could tell, the reason he wanted the rifle is because it's considered "cool" and he makes it clear that he views it as somewhat of a toy. Calling the AR-15 "a Lego kit for adults" made my stomach turn, but I understand where he's coming from.
EDIT: a commenter below mentions that the author lives on a 17-acre farm and owns a gun to take care of animals that invade, as well as for recreational shooting.
What's missing from this article is a discussion of why so many guys feel like they need to own such a weapon (and usually more than one) in the first place. If you're a hunter, survivalist, preparing for the zombie apocalypse, fine, yes, you need a weapon. That's understandable.
But it seems disingenuous for the author to write such a long post without including a critique of the way the AR-15 is marketed. A common ad I've seen posted is just a picture of the rifle with the caption: "consider your man card reissued". Call me insensitive, but the person who gets fired up by that ad is not someone I want to see owning a rifle. Or any kind of weapon for that matter.
Our definition of what it means to be "a real man" needs a deep and thorough re-evaluation.