"The other day, I asked my wife to make me a sandwich. She told me to make it myself, and I politely informed her that the 15 minutes spent doing that would cost us $25 so it had better be the best sandwhich I have ever made."<p>Ugh, what a load of nonsense. This would only be true if the OP was so overbooked that every minute not spent working would result in irreversible income loss.<p>I bill clients $200/hour for running their product or startup. Does that mean that when I go out for coffee it costs me $100 just to be away from my laptop for half an hour? Of course not. Some people seem to think that when they bill hourly they are tapping into an infinite sea of money, and the only constraint on how much they make is how much time they put in. This is clearly wrong in the vast majority of cases.<p>The $25 you 'loose' by making a sandwich at 14:00, you gain back by working another 15 minutes at 19:00, or the next day, or the next week.