On the other hand I always had to live side by side with those who call themselves holders, i.e. those who don't take decisions.
They just accumulate no matter what, based on the faith that bitcoin's price will always increase (I said price, not value, on puropse. They talk about disrupting, about new order but all they care for is to have a share of the pie, like anyone else)
They did to make decisions. If they did not make decisions, they did not spend money to invest in bitcoin. The process of decision-making is different between them: some made due diligent investigation and research, some simply decided to invest after hearing about bitcoin, reading about it and have strong belief in the future of bitcoin.
Now, this is the exact opposite of what I think of investing: blindingly relying on something that you cannot control but, for the time being, they are being proved right.
Some blindly investors are luck if they chose bitcoin. However, I don't know those guys actually care much about bitcoin and back up their private keys in right methods or they already lost their private key and bitcoin. Many bitcoin was lost from early adopters.
If it proves right that the real, deep power of bitcoin is scarcity, and that this scarcity will always push its value (and price) higher, IF this is true, what sense does it even make trading bitcoin?
The fixed and finite total supply, the 4 year cycle of block reward halvings, the total lost bitcoin and the future adoption growth will do help bitcoin has exponential growth in price. Let's think beyond all those things, bitcoin changes the world with its idea, and blockchain technology. That is the most important contribution of bitcoin to the world.
Trading is for two types of people: gamblers who don't know what they are doing, don't aware of risk, and are not able to manage risks. The second type is professional traders who manage risks and capital perfectly and they are the winners on the market.