* You can have bitcoin but if it is not being tradable to fiat currency then your bitcoin has no value at all.
"You can have
fiat but if it is not being tradable for goods/services then your
fiat has no value at all." - Fiat is worthless, but we gave it value because we trust the governments who "manages" the money supply and accepted it as a means of payment. Bitcoin is an upgrade to the our current means of payment and exchange standard. Why should we trust an entity when we can trust the society aka the nodes running the Bitcoin network?
There is a decent amount of stores in the world both online and offline that currently accept Bitcoin payments. I don't know if they would still accept it if Bitcoin would not be tradable for fiat, but let's not forget that we are in a free market. I don't think someone is able to ban trading BTC for fiat.
* You need to buy bitcoin with fiat currency without fiat currency you can't have bitcoin
Again.. wrong. You can earn Bitcoin with other resources like your time (getting paid in BTC) or your hardware (mining). OR.. exchange other cryptocurrencies.
* when you buy bitcoin you have to pay services like in those banks and when you like to convert bitcoin to fiat and withdraw it to a banks then you will then again to pay the service of the bank. You need also to pay the bitcoin transaction fee. So fees are everywhere from those banks to bitcoin network deducted by the miners.
You can buy Bitcoin from another person with zero commissions.
* bitcoin could stand alone without being paired by fiat currency but we should make it paired with fiat to get the bitcoin with value depending on the demand of the community.
Until we reach a higher adoption rate, why not?
Here's some food for thought. I have modified your conclusion in the OP post. Kindly reflect upon it.
I agree that
gold is sort like a form of money but no way it could be the same as fiat currency because people trade their fiat to
gold which will then the price of
gold decided depending on the demand of the people wanting to have
gold.