Agreed.
I don't think oil will help veneer. Water and vinegar is a good cleaning agent for many things but won't add to thier longevity. I would not want to get the borders of the veneer wet at all really, so a lightly dampened cloth only if you really need to clean a stain. Dry microfiber for dusting.

If it's that dry, a humidifier might indeed be a healthy investment for your stuff and your skin.

With great power comes Awesome irresponsibility.