Also called the "Return key," it is the keyboard key that is pressed to signal the computer to input the line of data or the command that has just been typed. The Enter key was originally the "Return ...

Haven't had an issue with the return key, but I have accidentally sent texts because the Send button is just above the top row of "keys" ... my Man Hand Fingers go to hit a I, O, or P, and suddenly ...

I get the feeling it's largely vestigial, like an appendix. The only thing I ever use the entry key for is when typing titles in on successive mp3s e.g. enter, type in the name, enter, arrow up, enter ...