In conclusion, since cryptocurrencies are often presented to the public in economic terms, their owners believe they possess a monetary type of asset and use it to make transactions. However, since the asset with which transactions would be made does not exist, what they actually possess is the ability to update the logs of modern pyramid schemes. In every pyramid scheme, participants give someone their asset, and in return do not receive another type of asset, but a promise, a receipt, a confirmation, or some other form of record — which is the case with cryptocurrencies.
If you have an open mind towards cryptocurrencies, you will better appreciate it as an asset. First, an asset is anything of value that is also capable of generating more returns. Most cryptocurrencies (like Bitcoin) fit perfectly into this definition above. People are acquiring cryptocurrencies because it has the potential of generating more revenue/returns just like every other assets. Cryptocurrencies can be measured in monetary terms, it is tradable and ownership of it can be transferred from one person to the other just as you rightly stated.
Again, assets are subject to appreciation and depreciation and cryptocurrencies have these features to be qualified as assets. So if after comparing these characteristics of assets with cryptocurrencies and you still think cryptocurrencies are not qualified to be referred to as assets, you should then use it the way you feel it should be used or you ignore it totally.