I have noticed there seems to be a lot of engineers that think life is an optimization problem, that time spent not working is time wasted. I don't understand i

I have noticed there seems to be a lot of engineers that think life is an optimization problem, that time spent not working is time wasted. I don't understand it at all, the primary purpose of life should be in pursuit of happiness and joy. I don't get the people that deny themselves joy and happiness in lieu of slaving away with their work. There are some people that genuinely find joy in their work, I have no problem with those people. They probably have a bit of a problem in their personal life with overdoing it at work, but as long as they genuinely enjoy it I can't fault them. edit: I should say before somebody jumps down my throat, I'm not saying we shouldn't have to work, or work is so terrible. I'm saying work is usually a means to an end, and you're very lucky if you happen to enjoy what you do to any degree.