Why can only leaders schedule posts?

Although I understand that it is insurmountably more important for a leader to be able to schedule a post I do feel it may come in handy for the (very occasional) user as well, especially if they frequent that community a lot. Although I could also see it being rather irreleavent to most people and could potentially give a small amount of extra clutter to someone trying to post. But maybe there's something I don't see with it?