I give the school PTA cash now since they sit on checks for so long.
I always wondered if I was an outlier regarding this issue? My kids are in their early 20s now, but back when they were grade schoolers, check writing was far more common. My wife and I eventually reached the conclusion that many parents who ran programs, such as Brownies, PTA or similar, were simply incapable of dealing with simple financial tasks , and could not be trusted to handle checks. It was common to have 2-4 checks to organizations that were floating around for months,, or lost by irresponsible moms. In our case it had nothing to do with a danger of bouncing another check, when a long forgotten one was cashed, it was just the irritation of dealing with folks who couldn't handle a basic task. We tried to switch to hand delivered cash, but we even had one Brownie leader take my cash, record it in her ledger, then tell me that I owed it, weeks later. I had to make her open her ledger, then show here where SHE recorded the transaction!
As for those that claim to never write checks, I would love that, but it really isn't practical. Several transactions in my world, including anything involving local government business, are pretty much limited to checks. My real estate taxes are four separate payments. School, county, and two smaller ones. They all are paid by check, and mailed in with a SASE and all copies of the bill. A copy is sent back as stamped and certified. I could do all this, with cash, and in person, but here in rural America, the local tax collector tends to keep some very limited and inconvenient hours, and the "Office" is often an enclosed porch on the side of their house, in the middle of nowhere.
The other odd reason to own a checkbook is that we are serious RVers, who travel for months at a time. We occasionally hit a campground or other service provider, in a remote location, who is happy to take an out of state check, but refuses a credit card. On other occasions we end up at a campground, after closing, and find a self-check in setup. The choices are often pretty bad, including listing all your CC info. on the outside of an envelope, or filling it with the exact amount of cash. I then write a check. I don't have to worry about CC fraud, or anybody claiming that I didn't put cash in the envelope.