Why? Let's see, starting with grade school on through my latest brush with the Agile Cult ... it's just been bad experiences all around. Being unable to concentrate due to the incessant babbling of others, the flow-destroying "interrupt, everywhere, all the time," the sudden changes in direction (characterized as "whimsical" if I am being extremely kind), the overhead of personalities, and so on. It's bad enough that it has probably unfairly colored some common, adjacent items.