Stop with the intrinsic value bullshit. Cant you see it? Our value judgements are to a certain extend unalterable. We always want water and we always want food as we depend on these things for survival. Again for every thing I can list some use case.
Have you ever heard about
the law of marginal utility? If you are thirsty and hungry at the same time, then a bottle of water will be more valuable to you than
any food, but once you have satisfied your thirst, you would be happy to exchange a second bottle of water for some food. How can this ever be possible if our value judgments were hard to change? If you had a million bottles of water, then what value would they be to you?