Like Himalayan salt. Hundreds of thousands of years old, shelf life of 2 years…
I suppose anyone gullible enough to buy Himalayan salt is also gullible enough to believe salt expires.
What’s wrong with preferring pink salt over table salt? It’s probably confirmation bias but I like the taste better and it isn’t any more expensive than decent rock salt.

Pink salt has a different mineralogy than other salt which does affect the flavor.

Part of eating is also visual enjoyment, so even if the texture/taste was exactly the same, you enjoying looking at it is also part of the experience.