Well, there is also the principle of the intolerance of intolerance. I can respect your beliefs... until you try and dictate my beliefs or actions based on them. heh. But more importantly, I tolerate most people, but I cannot abide bigotry. "Very little patience" indeed. :)
I waffle on trying to convince others. Obviously not in supernatural debates much anymore, but certainly in politics and matters of acceptance and tolerance, where it might make a difference.
But to sloppily pick and choose where I draw from your reply - there is truly a fine line on being useful and helpful and just masturbating hatred into the text box and telling them what I REALLY think of them. lol.
I try to err on the side of what they say about Keanu Reeves who supposedly embodies the spirit of Laid Backness - if he disagrees with someone, he won't argue, just say, "You're right" and move on. lol. That is a level of zen to which I aspire. :)