Define extensively. Anybody who pays with checks in situations where credit cards or cash can be used is gonna get funny looks, unless they’re a little old lady.
I actually can't think of a single place outside of a bank where you can use a cheque and even then it's a challenge to actually exchange it for cash. Most banks in Australia have trouble coming up with $10,000 - even busy branches in the CBD of a major city.
Now, granted I haven't been to America, but I do read things on the internet. From what I understand, your financial system is held together by a system of pneumatic tubes passing cheques around, though I hear there is some experiment with telegram machines.
Alas, I’m not sure which tubes you’re referring to. These days, banks use FTP to shuffle bank transfers around.
However, I do think checks have their uses. I’d rather write a check than use cash any day of the week. You can cancel a check, but you can’t cancel cash. Of course, I’d rather pay digitally. But sometimes that’s not an option.
Also: “cashing” a check usually just mean depositing it into your bank account. Not swapping it for cash, although you can do that, too.
I still have that check because it's literally worth nothing around here.
I have never in my live used a check or seen one outside of movies.