If Bitcoin is a currency with deflation property, that means BTC has to be appreciated (which in reality means BTC is a fancy collectible)
Therefore a rational BTC user will hold BTC rather than spend it.
but if no one spend BTC, then what's the point of such a currency?
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who can help me find out the fallacies in this reasoning? thank you!
Spending money for computers is one ot the most stupid things you could do (as they in the past ~doubled their speed every 1-2 years or so, depending on which part you look at). still everyone buys PCs - why?
Because they need them more than these few hundred Dollar on the bank, even if they could buy a twice as good PC in just 1-2 years! It might even be a good deal, if they earn more money because of the PC than what they would have gotten as interest (here I'm assuming that interest is higher than inflation btw.)
The same goes for Bitcoin, only that you don't need to put them on a bank to get "interest" (= you can buy more in 2 years than now)