If bitcoins were currency, it would be complicated if bitcoins were used to buy cheap things, transaction fees would be very expensive
Bitcoin can be seen as an alternative at this time for some countries and Bitcoin is still suitable to be considered as an asset not a currency, because there are still many countries that legalize Bitcoin as commodity assets. So the perception of Bitcoin as a currency is not coheran in many countries today, most people who hold bitcoin because they realize that this asset has the ability to maintain value.
I have many questions in this thread. Sorry if my argument isn't comprehensive, I don't have a deep understanding of bitcoin yet
Bitcoin is still an alternative and has not been fully used to buy goods, unless you live in El Salvador or spend something using a platform that receives payments using Bitcoin. There is nothing complicated if you want to make a payment using Bitcoin because just enter the amount then send it.