Of course, I know there are probably folks reading this who might not have access to ice so readily and I fully acknowledge this is a first world problem.
There are probably folks reading this who might not have access not to ice, but electricity in general.
Anyway, I rarely use ice as my tea doesn't need it, so a silicon tray is fine for me.
We drink a lot of iced tea in the summer. Mostly we just use it for our water to keep it cold. Then we use it for mixed drinks on the weekend, but like I said, you don't really realize just how much you use until it is not available.
I doubt it. I think ice tea is more of a US thing, so I would imagine most other places they drink it hot all the time. For me a lot of it depends on the kind of tea.