It seems obvious that there will never be any sort of universal agreement or even understanding on this topic. There are just too many differences between the rigs we have, the type of camping we do and the access to water where we camp. Someone who has a big rig with a 100 gallons of water, or who takes short trips, or has ready access to water, is not going to understand camping in remote areas for many days with a small FW tank. I have seen plenty of people camping in van conversions or other small rigs and getting by for days with 10 gallons of water or less.