PLEASE provide an option to make game days last as long as real days.

[Niwashi]

If the colors on your screen can affect your circadian rhythm, then you have far too much of your ambient light coming from your screen, and you're playing for much too long. That's terrible for your eyes to begin with. Open the curtains or turn on a light. The light from your screen should never be the majority of light in the room.

Aside from that removing your reason for asking, there's at least three reasons why the suggestion would be a problem:

• As some others have mentioned, there are several game features (gathering, fishing, sightseeing) that depend on Eorzea time. Perhaps they could all be adjusted to allow for a 24 hour rather than 70 minute cycle, but it does rule out having different players use different cycles.
• Players also sometimes use Eorzea time to coordinate with each other, since that time is set at the server and not dependent on the platform you're playing on. If it were player specific, we'd lose the ability to say "Pulling at 3:00 Eorzea Time" or the like.
• Most people have a particular time of day that they're most likely to be available. For instance, someone who works a typical daytime shift is likely to be only playing in the evenings. Should late evening be the only time of day they ever get to see in game? You actually went on to complain that it's so often night in the game, yet your suggested solution would make it *always* night in the game for anyone who only plays at night. The short day/night cycle was chosen to ensure that everyone can see both daytime and nighttime in the game no matter what time of day they're playing.