Do you like the term "em dash"?

@DaddyP It is because computer keyboards are a logical evolution from the typewriter. On typewriter keyboards, there was a carriage return key so that one could continue typing on the next line. The reason it still exists when it has no reason to is that humans are illogical.

@CorvusBlackthorne you’re on a roll, so I’ll cast another Q…

Why are the keys arranged QWERTY, ASDF, etc. instead of ABC…?

@DaddyP There is a fascinating answer behind that. In the early days of typewriters, the keys would become jammed frequently. This was compounded by the fact that secretaries and other persons who regularly used typewriters became so skilled at speed typing that the poor machines could not keep up. The solution created by the typewriter manufacturers was to rearrange the keys in an unfamiliar pattern.

Why they have not simply reverted to an alphabetical layout, I do not know.