Here's my 2 cents. Last weekend I tried to squeeze in a short ride before an afternoon wedding. About 5 miles into the ride, I get a flat. The first roadie stopped and asked if I needed help or a tube. Told him I have a spare and thanked him. Sure enough, I had a pinch in the spare when installing it and blew it out. There was no car access to where I was so I had to walk 2 miles to have my wife pick me up. On several separate occassions as I walked, roadies went by me from the opposite direction. As usual, I wave at other cyclist. Although they all made eye contact with me, none of them waved back much less offered a spare tube. Quite sad really. At the end of the 2 miles, the first roadie returned and asked how far I had to walk and asked if I needed him to come back with a car.

Moral of the story...a$$Os out-number nice people.