> Checks where I am often clear in a day. Rarely longer than two days.
That's extremely slow. Electronic transfers are basically instant these days.
> I stated that replacing checks with computers adds more points of failure.
It literally doesn't. A cheque is one big point of failure that doesn't exist with electronic transfers.
> Or do you somehow not notice the litany of things that go wrong with computers every single day right on the front page of HN.
"Computers" aren't a single thing. Bank transfers are ridiculously reliable. Far more reliable than cheques. And as I've already explained, cheques are processed by computers too so you aren't somehow skipping the possibility of programming bugs by using them.