Comment by ryandrake

That’s what these “time is money” people don’t get: It’s only opportunity cost if you would otherwise be working. Lets say I make $200/hr on my day job. If I choose to spend 4 hours in the evening writing an app, it’s not costing me $800 because I am not doing it instead of working. I would otherwise be cleaning up the garage or walking the dog or something.

Most people’s free time is not worth anything monetary. Sure, there is non monetary value in chilling out and spending time with family, but if I spend a few hours making an app for myself, then I got something for free.