It ain't over, until it's over!?

Okay, it's Saturday, the weather is beautiful, so I'm DONE with chess.com for the day.  After this game, I don't really need to play anymore; I may read, run through tactics, but play... no.  A game isn't won until you win!  I had a won-game at move #10, why did this game last until move #40!  I won with 34 seconds left, the suspense was pretty exciting, but dag...what did I do wrong!?