Seriously!?
The real world is a lot different from what you think it is. I do not want to offend you, but what is quoted above is just so not true, it hurts. To clarify, I do not trade at all, but most trades out there are driven by two simple emotions: fear and greed. In Bitcoin even more so than in other markets.
Who trades with fear and greed? If you don't trade yourself, how would you know?
You only trade with money you can freely lose, so what would you be afraid of?
I'm trading bitcoins, and I am not greedy, I have a strategy with "take profits" and "stop loss". I don't change it because I feel it right to change it

LOL come on, clearly you aren't aware that most people aren't expert traders. Sure YOU might trade on pure logic and strategy, which is the best way to go, but most people aren't that controlled and this is pretty much common knowledge. Bitcoin is the ultimate example of fear and greed controlling peoples trades. The insane price swings from 266 all the way to 50 in days are lead by traders emotional panic and desire to get as much money as possible, either going up or down.