[atq2119]

The difference is that Bitcoin only has resale value.

The other examples you mentioned generally have some significant additionally value beyond just resale value -- e.g. stocks pay dividends or are expected to at some point, a house is something you can live in or get an income from by renting it out, and so on.

[npoc]

Bitcoin's use is as a store-of-value. That's it's utility. It has the traits of an ideal store of value. Eventually we may use it as money, but that won't happened until it is much closer to it's ultimate value and the value as stabilised enough to use it as a unit of account.