Personally, I have no problem getting shot down, tanked, or bombed.
What I don't like is the PM smack-talking, insults, and internet-tough guys who feel the need to tell you (in not so nice terms) that've been shot down, GV killed, whatever. Big deal, I'll go to the tower and get another brand-new, fully-armed and fueled airplane.
Overall, 95% of the people in the game are good people. Its hard to remember that its a game sometimes, and I find myself hating someone for tearing my wing off repeatedly. Then I'll get a .s or I'll fly with someone who's switched sides, and it brings it back to reality.
That being said, those 5% idiots are the reason I don't attend the convention - I'd kill someone. I might not be the best pilot, tanker, or AH gamer, but I can mess someone up in real life, and thats a hassle I don't need.
So I can see where not taking it too seriously can be applied - at least from an attitude point of view. From a skills point of view, or striving to be a better player, taking a step back will never happen. Too many hotheads, internet punks, and squeakers with something to prove. When you stop trying to improve - doesn't matter if its AH or real life - its time to move on to something else.
As for me, I'm off to master Windows Solitaire <jk>
J