I think the largest issue is that players for some reason expect this feature to be implemented in some overdone way. They need to remember which company this game is being developed by.
To simply put it, as others before me have mentioned, it is a basic feature. Does there really need to be a purpose for it? That's not to say they can't add features later that will benefit from it.
Take walking for instance. As far as I know, that is a command that is rarely used. Most characters are constantly set to running mode. Regardless, it's still expected to be included as an option for players.