I love fashion. Even the bad fashion. Even the most obnoxious, pointless, ridiculous trends. I love it because it is pointless and ridiculous. I love watching people take fashion seriously, using it as a form of self-expression, analyzing and evaluating it, and using it to make statements. I love when people claim to not understand fashion or try to reject it, thereby proving they're just as influenced by it as the most dedicated fashionista.
I love watching trends grow and change, and pondering the reasons for the development of particular fads today and throughout history. I love how fashion trends reflect the historical events around them -- the liberation and then masculinisation of the female form in the 1920's as women gained rights, and the power suit of the 80's as women began to be seen as the working equals of men. I love how one choice by the right person can set a trend that lasts decades, Coco Chanel falling asleep in the sun for example, led to the suntan replacing powder-white skin as the ideal. Fashion is an integral part of the human experience, no matter what anyone says -- a wonderful, whimsical part of the human experience, and whether or not one chooses to partake in the trends, I feel sorry for people who cannot enjoy it for what it is!
I think the most annoying one to me is the trend of males wearing their pants below the ass. But there are cultural factors at play in addition to just clothing choices, and your post is right on.
I can honestly say, in my area, I believe I started a mini-trend in 1991.

I'd take artistic and even questionable choices any day over bland-ass-look-like-everyone-else mediocrity.