I’ve had a shower head setup for about 14 years, with a removable handheld mounted to the pipe coming out of the wall. So the unit had 2 heads, you control what one emits and it had a bit of weight to it. I always wondered about it hanging on to the mount. Today, it finally failed at the threads.
My guess is that the weight and repeated drops of the handheld over time weakened it. It broke today, separating the unit from the threads, so the threads have less on it than before.
https://preview.redd.it/kwpgnzo8a1sg1.jpg?width=3072&format=pjpg&auto=webp&s=5333959bff1f3b6dbe5