Easier said than done. For example, I drink more than 3 litres of water each day.
The average water that we have to fill our body is just around 2 liters a day and you're doing it more than that which isn't harmful.
It's better to have more water than to have less. So what do you say about the food supplement? you won't take them anymore?
I agree over your statement that better more than less water but don't exaggerate because over-hydration can cause other problems. My personal doctor said, drink as much water as your body is asking for, not more, not less. So the amount of water you drink is dependent of your life style.