If you value your time at, say, $15/hr, every hour you spend watching Netflix is $15 down the drain, plus the cost of Netflix.
I know you’re in college and $15/hr seems like a lot, but it’s actually a remarkably low valuation of your time; $50/hr is more indicative of the person you’re trying to become. If you watch Netflix three hours each day, that’s $54,750 lost every year. An economist would refer to this as the opportunity cost of watching Netflix.
I once overheard a student say, “Ryan won’t let me watch Netflix at work, so what am I supposed to do?”