Learning Morse was what I hated most in my training. The RAN expected all officers to be competent with it and there were certainly times when it came in handy and I did use it. But it took a lot longer than most of our other components for me to reach competency.
Everybody is using custom tones now but a few years ago, it used to really impress my students when I pointed out that every time they got a text message on their phones (they all seemed to have the same phone) the beeping said “SMS” in Morse. They thought that was really cool - that it wasn’t just a random beep.
I was supposed to know it for visual signaling but I never used it enough to stay proficient at it. My most common flashing light signal was AS (wait while I go get a signalman.)