I don't think bitcoin is a future Money .Because Bitcoin is a digital currency and it is used as a digital payment method. The use of Bitcoin is increasing day by day. This does not mean that the local fiat money of each country will disappear in the future and Bitcoin will be the only currency used globally. However, in the future, Bitcoin may be used as an alternative coin to fiat money worldwide But it will not be a mandatory currency to use
There are some of your statements are contradictory.
If it becomes an alternative currency in the future, means it is future money too.
Whether it is our main currency or not, it is future money as long as it can survive.
Since the use of Bitcoin is getting massive, it is a sign that Bitcoin has a big chance to survive and to adopt by people around the world. Surely, it is an indicator that Bitcoin is possible to be a future currency.
By the way, although Bitcoin is digital money, doesn't mean it has no chance to be the future money. Digital money/currency becomes more popular, its use is increasingly crucial in the current digital era.