Great post and so true B&P.
Also, the ships have hairdryers unless you are really attached to the one at home. Also, what are these batteries everyone needs to seem to charge? On a cruise vacation? Also, if you have a "flip phone" it will provide enough light to get to the bathroom or you can just keep the bathroom light on and the door cracked. In most rooms, you're almost sleeping in the bathroom anyway so it's not a great distance lol.
As most experienced travelers will tell you...."Bring half the crap you think you need but twice the money you think you need" !