This reminds me of an observation I once had at a time when I was doing contract work at an hourly rate. During a trip to Vegas, I found myself at a blackjack table making bets that happened to match my hourly rate. It occurred to me then that I was essentially gambling hours of my life, each turn in a sense increasing or decreasing my effective lifespan.

Of course "time == money" is a well known axiom, but it was still odd to consider in that context.