Virtual money such as bitcoin is now in widespread use in many countries, but there is a good future for virtual money in the 4.0 era. It is not unbelievable about the power of virtual money, but in the age of 4.0 one needs a basis to make sure that bitcoin exists and grows, or just as a wind passes by and goes into oblivion . Have you ever thought about the basis of need and enough for bitcoin to grow?
The usage of bitcoin is not as widespead as one might think. There are 32 million Bitcoin wallets and 7.53 billion people. Assuming that there is 1 wallet per person, even though some people have a few wallets and some wallets belong to companies, exchanges etc, we get 0.4% of population using bitcoin at all. That's about 10 times less people than those using USD as their main currency. So yeah, the perspectives of adoption are not very promising for now. As for whether there's even enough bitcoin, let's do the math again. Now we have around 13 million btc in circulation (taking into account that 4 were lost). If everyone gets an equal part, thats 0.0017 btc per person which is only $6 at the current price. However, since each bitcoin equals 100 million Satoshi, each person has 170k Satoshi. Is it theoretically enough for the current population and needs? There is around 80 trillion dollars worth of all money in the world right now. We have 1.3 quadrillion Satoshi, so yeah, we probably could replace all of the money with bitcoin (if we ignore the issues with transactions, of course), but that will not be the case forever (unless there's a way to split Satoshi).