The anonymity on that cite encourages a kind of mean spiritedness. It's kind of depressing the uncivil tone on that cite. I try to avoid it but my wife likes it for certain things and points me out to such threads.
I tried once to ride a MUP on the weekend in spring and gave up, it's frustrating enough riding the MUPs on the way home from DC in nice weather.
I only ride on the sidewalk for a very short period of time when there is really no other way to get to my work building. I also have to ride across the National Mall in places and during times like the Cherry Blossom Festival, I want to go crazy at times.
I wish the W&OD and Custis Trail would be doubled in width. It's pathetic that they are so narrow. Most sidewalks in Germany are clearly delineated with walking and cycling sections. I was in Colorado this summer and noticed the same thing near the University of Colorado. I bet the W&OD is the most visited state park in all of Virginia and it is basically lawless.
People in the DC area thinks it is so far ahead infrastructure wise but is really pretty backwards. Don't even get me started on the Metro, that's the main reason I commute to work on my bike so much. It's like the backwoods bumper sticker (The Worst Day Fishing is Better than the Best Day Working) except applied to Metro it is: The worst day riding my bike to work is better than the best day riding Metro.