vargoje, you are quite right; fly fishers seem to be almost universally kind. maybe it's the days and days spent on the stream pursuing a sport that can amuse one for years without competition raising its head. all those marvellous books never once mention beating the other guy, unless it is to a pool on a famous river during a known hatch, and even then, there are conventions observed to give everyone a chance.
(oops. turns out there are teams and tournaments, but they've not taken over yet!)
fly fishing and baseball share a totally deceptive simplicity; that's why they can both be lifelong pursuits.