This is how many Bitcoin people in here are arguing:
I saw some people buy a can of Coca Cola for 2000$ just a month a ago.
Now I can buy a can of Coca-Cola for only 500$, it is cheap!!
Bitcoin is not cheap at 6000$. It is make-believe toy money with no real value apart from some novelty value for people who like to have cryptos for fun.
You could make the same argument about many other items such as collectibles (sports, comics, etc.). The price will vary depending on how much are people willing to pay. Buying a limited edition comic at USD 2000 might be cheap for someone really want it, while in a few years, a month or less, it could be worth USD 500 or no more than a buck. It depends on what is valuable to you.
You could argue that those are tangible items, but I am using this example just like you did with your can of Coca-Cola.