But then, I remember the dives that experienced people "sacrificed" to make me the diver that I am.
Exactly. We are all "students" until the last time we leave the water. The one who thinks he knows it all is the most dangerous person to dive with regardless of how thick his logbook is or how many certifications he has. It doesn't hurt anyone's valuable dive time a whole lot to take a less experienced diver along once in a while. In fact, you owe it every now and then, just as someone was as generous with you once. You had a chance to pass on some of your "vast experience" to someone who singled you out because he thought you might be a good teacher and mentor. He had the good sense to ask for a little help and to confide in you, Don, in order to learn what you might have to pass on. Your response was to publicly blow him off in front of the whole board.
How wrong he was.
"Remember the people you step on going up the ladder because you're going to meet them again on the way down"