Why do you have to argue in finding an answer to a very simple question like that? Even though if you yourself already know that Bitcoin is an asset that must be owned by many people because it is very valuable, of course you must have a way to get it in the simplest way possible and then store it in the safest place possible without having to throw it into the market. This means that if we refer to your question, of course mining can be a more appropriate solution for you to run as long as you have the ability to assemble the tools needed to support the work.

But if you already have the ability in trading, I think it is also not wrong if you do that job for the purpose of increasing the number of Bitcoins, but it feels a bit of a shame if we sell Bitcoin into the market even though after that we can buy it again with a slightly different amount of money. However, you also have other options such as trading with altcoins, the profits of which you can use again to buy Bitcoin and store it for the long term.