Most people who enjoy gambling actually get a bigger thrill from a loss (a near miss actually) than a win. Therefore people like hearing about the one that got away rather than some look-at-me c*nt sounding all smug.
Exactly Simster, it's just people who say "look at me, I'm right" (but you don't hear a peep from when they are wrong).
If you've had a winner just enjoy it - no need to wave your cock around.