Good luck to your opinion though but I just withdrawn with my Bitcoin into my Fiat local money amounting $1000 yesterday and I guarantee you that it is not an empty numbers because I am now spending it with my things and food. This is a modern technology digital currency and we are here in the digital world so I think it is necessary to have it, they are still haters that really can't accept that fact.
Bitcoins as of now when I am typing this is backed up by $72,987,343,018 and with that I am confident that it has a value and not an empty numbers because it is full of numbers that resulted of billions. It is true that Bitcoin is not tangible but it has a value right now even you deny it all day.
Of course that you can exchange Bitcoins for fiat, goods and services - this is their basic purpose, that's why they even exist in the first place and this is how those who inveneted them are coming into possession of real property in exchange for nothing.
What I am arguing is that Bitcoins are just emptly numbers without any real value to its owner - he can't eat them, drink them, wear them, drive them, sit on them, enter into them, please the aesthetic senses with them or made a legal case to come into possession of goods and services with such capacities, like in the case of fiat. Simply put, those who invented Bitcoin received real market values in the form of goods, services and fiat, in exchange for some empty numbers recorded in a public ledger called a blockchain. Can this blockchain be used to satisfy human needs? No. Can this blockchain be used to establish a legal case and get some kind of value out of it? No. Thus, Bitcoin is neither good nor service nor money not asset, but instead it is some empty number on the internet.