Everyone has different plans and strategies in treating Bitcoin and all of them aim to make a profit, and this is the beauty and freedom of Bitcoin's existence.
However, we will never know for those who use Bitcoin for trading, short, medium and long term whether they use Bitcoin for transactions because we know that Bitcoin was created as an alternative currency.
And I think they will definitely use it if they have to use Bitcoin for transactions and both parties use Bitcoin and have Bitcoin wallets, and the right reason is probably because Bitcoin is still not allowed to be used as a transaction tool. And it may only be used for individual transactions if Bitcoin is prohibited from being used as a means of transaction, and if it is allowed, perhaps only a few shops or sellers will accept Bitcoin as a means of payment.
So in my opinion, even though Bitcoin is better used as an asset or investment, that doesn't mean they don't use it for transactions because we don't know about it even if it's only in small amounts. And I'm sure that eventually Bitcoin will work for transactions and investments and it's just a matter of time.
To be honest, although I use Bitcoin for long-term investment. However, I have also used Bitcoin several times as a means of private transactions between Bitcoin users because of its convenience, speed and distance.
Just like every other currency, Bitcoin can be treated and should be used as either an assest or a form of investment, more essentially bitcoin can be used a form of exchange. I believe the introduction of bitcoin was beyond the use of an assest or a form of investment but primarily as a medium for exchange of value just like every other hard currency, it's values will definitely be on the increase due to the direction in which the world is tending to(web 3). With the help of AI and technology. The value of bitcoin in the long run will definitely increase.
Also in conclusion, Bitcoin is an all round asset used for different purpose. A store value, payment mediums, for transactions and can also be traded since it's a valuable commodity and we all know that anything that has valuable can be tradeable. It can be used by everyone, so far it's not used for fraudulent activities then you're good to go. Bitcoins utilities shouldn't be one sided, rather users needs to expand their knowledge about it and thereby bring more life in Bitcoin.