The demand side is trickier, why do I want the Bitcoin? The best I have heard has been to look at the qualities of Bitcoin compared to other money or things that have been money in the past like gold and a paper currency. And fundamentally understand what the advantages and disadvantages are to each.
It never spoils
Cap on the supply
Highly divisible
Can carry it in my mind as 12 words
Secure from theft
Censorship resistance
Store of value
I can spend it remotely
Permissionless
Etc
Each one of those makes it better than the alternatives so I want it. For all the positives, the only negative iv seen as a money is its lack of price stability.
My gut says that it will eventually be a stable currency as stable as the variability of currencies on the foreign currency exchange, but the onboarding taking place and speculation about what value will be stored in it is constantly changing. That will eventually settle down.
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