Let's get serious and tell you why you NEED an AR-15...according to Colin Noir. I add another reason which was to join the monthly matches at North Texas Shooter's Association. (Shameless plug ) The other reasons Colin discusses are even more important for ownership of this type of rifle.
For an educational and entertaining history tour of the development of firearms from the matchlock to AR-15/M-16 check out from the T-Rex Arms YouTube channel 'Why Everyone Needs An AR-15".
From the video, "Once again, various gun control groups are pushing for a national Assault Weapon Ban that specifically targets AR-15s. Does the AR-15 deserve all this hate? Does the argument for restricting "military-style rifle" ownership hold up? Isaac Botkin walks through the history of every step of small arms weapon development to see if there is a case for this."
Knowledgeable members of this forum will have heard much of what he says before but get to the end where he make the point well comparing the M-1 Grand to AR-15 for self-defense for his mom.