I'm definitely not headed to the bathroom every half hour, like I would be if I drank 4 liters of water ever day. What exactly needs that much replenishing working at a computer in the air conditioning most of my day?
https://www.goarmy.com/soldier-life/fitness-and-nutrition/co...
Military suggests roughly 4 liters for an active person, for an entire day. Even adding another liter for strenuous and in dry climates, that's far less than 8 liters.