Ya, it's hot out - but I love cold water.
Refreshing and delicious and healthy and effectively free.
For most of human history - and much of humanity today - a drink of cold water on a hot day isn't available.
We're lucky.
I've heard some Chinese people think cold water is unhealthy. I hope they're wrong.
It doesn't even have the 'brain freeze' problem for most that ice-based things have.
I have an Opal Nugget Ice Maker (Kickstarter project to clone Sonic pellet ice). It's stupidly expensive, enormous, and noisy...but it's gloriously amazing. It makes water the perfect icy-cold temperature, without being
too cold. I've been trying to drink more water & the nugget ice maker has really incentivized me to drink more because it's so dang refreshing. I have a 30oz & 64oz double-wall vacuum-sealed tumbler set that I fill up with the pellet ice & water every single day. In contrast, I don't like the ice from my fridge's ice maker at all. Boy that sounds awfully particular & nerdy writing out, but whatever. Pellet ice is awesome & it makes me look forwarding to drinking ice-cold water at the perfect temperture all day long, as opposed to being a chore to drink 100oz+ of water every day.
It's funny because with ADHD, I daydream a little too deeply about stuff like this all the time, and have thought about exactly what you have thought about...how for most of human history, there was no refrigeration, there was no ice, no cold drinks, heck, no air conditioning, and even today, a huge amount of humanity today still don't have access to those resources. We are
very lucky. There's nothing like coming in from a hot day or a good workout and having a delicious, ice-cold drink of water available.
On a tangent, if you want to read some really interesting history, check out the wikipedia entry on the frozen water trade:
https://en.wikipedia.org/wiki/Ice_trade
The ice trade revolutionized the U.S. meat, vegetable and fruit industries, enabled significant growth in the fishing industry, and encouraged the introduction of a range of new drinks and foods.
CNN has a pretty good story on it too:
http://www.cnn.com/2008/LIVING/11/24/mf.ice/index.html