So as someone who doesn't get thirsty and actively has to be reminded to drink water, here's my theory.

1. The temperature of the water matters just enough that it changes if I want to drink it, but not so much that I'm willing to make a specific temperature of water. E.g. cold drink on a cold day? No thanks, but I'm not heating up some water for a glass that's right.
2. I eat a lot of juicy foods like fruit and some meats. Even some foods with sauces. I eat a good amount of my hydration
3. Water doesn't taste good and has a distinct lack of texture that I just don't jive with
4. I HATE having to go pee too often. If I could never go to the bathroom that is what I would choose. So I may have unintentionally found a rhythm that keeps me relatively hydrated (I don't get thirsty and my lips aren't usually dry or anything).

That said, I have recently started making fruit juice that is like 80% water and 20% whole fruit and its helped my bowel movements a lot.