Beauty and function are sometimes one and the same, yet, sometimes beauty and function are NOT the same, it makes the object no less good at what it does just because it does not have beauty!
My brass casings do their job, they are not shiny, gold-plated cases, they are simply cleaned brass cases which function to allow for a controlled explosion inches from my face, propelling a spin-stabilized projectile at extremely high RPM's coupled with extremely high velocity. The AR allows me to safely shoot that cartridge (inches from my face) and offers an extremely-rapid follow-up shot if it is needed, or another one, and yet another one, yet, even more (times thirty, times however many full-magazines I may have on my person).
My AR is not pretty, there is no walnut wood with figured-grain on it and polished with 23 coats of polish. However, its beauty is in how simple it is and how functionally simple it is to shoot, and how reliable it is at shooting it many times!
If I wanted pretty, I would buy something made in England, like a $35,000 double barrelled shotgun. However, if I had that kind of money, having a pretty gun like that would not interest me in the least. If an AR is UGLY, I will take UGLY every time.