People would buy more than just bare essentials because people want things. This doesn't exist in a vacuum -- at this very moment, people are using fiat currency to buy all kinds of things they don't need instead of investing it in some kind of appreciating asset.
As there's no intrinsic value to bitcoin
There's no intrinsic value to fiat currency. I'm not sure why you keep saying this.
Sure, but that has nothing to do with what I said about them.
Again, you'll notice people are spending their capital on things they don't need all day, rather than than investing it in appreciating assets. Why are they doing that? Why would they buy things they don't need today, when they could invest in an appreciating asset and be able to afford 10 of those things tomorrow?