That's like refusing to use a fridge, insisting on letting your produce gradually spoil on the counter because "all harvested produce is in a state of decay anyway".
No, it's using a fridge in the understanding of the fundamental limitations of fridges.
You asked ‘why would
I want to use a service that serves stale data’. The answer is you don’t want to. But if you have a distributed system your only choices are about the nature of the possible staleness, since global instantaneous consistency is known to be impossible due to fundamental features of the universe.
In that case you're (intentionally?) misinterpreting what I originally said. The person I replied to was metaphorically suggesting turning the temperature dial on the fridge way up and I metaphorically asked why I would want to eat at his house if he's going to be serving me spoiled food.
My original question could also be described as asking why I would choose to shop at a grocer where items on the shelf are routinely far past the printed expiry date. That's perhaps a more direct analogy.