Ive seen lot of answers like, market will not have morethan 21M BTC and that amount will be saturated by 2140, hence there will not be any inflation etc. But what I do not understand is, if a currency is not using (in trading purpose you buy something with that money), what is the logic behind the reason of value of the money goes up ?
Yes bitcoin is created as a currency and intended to replace the fiat currency but as of now it is considered as an asset and people wants to have their own bitcoin because of it's potential to have a higher price. Yes bitcoin will have a high price in the future if it will replace the fiat currency we may be using satoshi to purchase in the future.