The only problem with that is the government. You know that right now the government regulates Bitcoin very tightly, even its function is limited to trading or investment only, if you use it for transactions in physical stores you might get problems from the authorities - even in some countries its use is banned. So things like this are what limit the adoption of Bitcoin right now. Not to mention not everyone is ready to accept Bitcoin as you expect. There are still many people who are skeptical about Bitcoin even though you have explained it from A-Z. So making Bitcoin accepted globally is quite a challenge, even though Bitcoin is so potential and its use on a wider scale can benefit more people.