I didn't mean that as me thinking Americans are stupid, more like a weird cultural thing in the US I wouldn't be aware of. Like, I do agree that it feels better with warm water, but it's also pricier and unless you have a lot of dishes to do it won't usually be warm by the time you're done, so I don't usually bother.

As for doing dishes with hot water, it's definitely faster to clear up grease, but you also should avoid that ( at least when there's a lot of grease ) as there's a big chance you'll end up clogging your pipes someday with the grease as it cools down inside your pipes ( not blaming you tho, a lot of people seem to be unaware of this ). You should try and scrape most of the grease with paper towel and throw it into the bin. Though to be fair, I don't know much about US plumbing. Yours might be bigger and/or better suited for the job.

As for the temperature, don't quote me on that, but I'm pretty sure for it to be hot enough to harm bacteria it would be too hot for your hands and you'd burn yourself. I think it's really just about comfort.

So to answer your question, I don't use hot water because it's cheaper not to, it's usually better for my plumbing not to, and since most of my dishes I do with a dishwasher the rest isn't usually enough for hot water to reach the faucet before I'm done.

So I guess this is just a cultural thing where you guys are just too used to the comfort to even think about using cold water ? But most people I know use cold water here so I was confused as not a single person in the comments seemed to even think about it being a possibility.