The only people who consider Bitcoin as an asset are those who believe that the value given to it by markets/speculation is so significant that it should be considered one. In reality, it does not work like an asset. Your car is an asset. You can not instantly transfer your car to someone overseas. Your car can not change hands with 10 people in a matter of 1 day. Similarly, your fiat in the bank is not an asset. It is not something you aim to store for a long period of time without touching it. Yes, it fluctuates with the price of other competing currencies, but does that make it an asset? You make the money in your bank ultimately to spend it on things like assets. Bitcoin is the same. Eventually, you will probably use Bitcoin to pay for your groceries, assets like cars, appliances, etc., give your kids an allowance and so on.
Bitcoin is a currency and its price is only volatile due to market speculation and instability of fiat currency
I know that the point of the OP isn't to start the asset/currency debate. Though I've replied in this way because calling Bitcoin an asset is wrong.
In my opinion, bitcoin is an asset, a currency, a safe haven like gold… it all depends on how you use it. When you use it as a payment method, pay bills, or buy goods, it's currency; when you use it for profit, it's an investment; when banks keep failing, and you need an alternative, it's a safe haven. Bitcoin is all you want, Bitcoin is not just a currency or an asset. OP is not wrong to call it an asset, and you are not wrong to consider it a currency either.