Bitcoin was not intended to replace fiat in the first place, so thinking that bitcoin will replace Fiat is a flawed taught. Fiat has been in place long before bitcoin and is considered a legal tender in every country but bitcoin is only getting recognition in recent times to many countries and even been complimented by Fiat. even Bitcoin is valued in Dollars which is considered the Fiat of a country so this further emphasizes the point that Bitcoin is very much complimented by Fiat and the value of Bitcoin measured in Fiat s it doesn't have its own currency unit of value independently.

I accept Bitcoins as payment for any form of transactions but i don't find it easy to spend it because i love it when i see the value of the asset i have increasing in my wallet, the value increasing by day gives me that profit i wish to get because i do see it as an investment at that time so i don't expect to be spending from may investment just like that, it's one in which I'm hoping to achieve a project with in the future except in some cases that i will spend my Bitcoin but most often every Bitcoin i accept as payment i don't  spend them in my day to day expenses.