AR's, AK's, 1911's can be a sickness just like Jeeps.
My requirements for my firearms is that they work over and over and over. I have a Bushmaster OCR XM-15 with a Eotech holographic sight. Works great and is very accurate. For what I require of the AR, it works.
My 1911 has had work done to but purely for function with no bling.
It all depends on what you want to do. A lot of people buy AR's just to say, "I have an AR". Some buy them for fear that one day they won't be able to buy one. Some people love to shoot.
Took my AR to the range yesterday and put a couple hundred rounds through it. Fun fun fun.