Simple questions: Bitcoin: What is missing for everyone to use btc on a daily basis?
You're actually asking two questions (as some have noticed), but the specific answer to this question is pretty simple for me - people don't understand Bitcoin, and if you don't believe me try doing the following - survey 100 random people on the street and ask them a simple question
"What is Bitcoin?" 90% of people will not give you any meaningful answer, 5% will know something basic, 4% will say that it is an investment, and 1% will say that it is a decentralized cryptocurrency.
What is missing to become world currency?
Your question from the Poll has an even simpler answer, which is exactly what Bitcoin has as its basis - decentralization. Do you or anyone else really ask such questions without realizing that the whole world functions on total centralization that has been built up over centuries - and most people can't see beyond their nose and don't care about alternatives, even less about being their own bank.