I can only add my own personal experience - generally I can only stomach water in small amounts. It just doesn't go down as smoothly as other drinks (juice for me). It feels like my mouth/throat rejects it a tiny bit.
(for reference, I drink some filtered tap water after every cup of juice)
I would think an even worse scenario would be having your entire brain mapped and uploaded, with everything you ever said/experienced/thought/felt/seen/etc. available to whoever. We should be able to take stuff to our graves.