They don't do their research: greed takes over and they act first and learn their lessons later. Just like in other parts of the Bitcoin world - it makes me sick seeing people lose tens of thousands of dollars from their Bitcoin Wallets because they didn't appreciate security sufficiently. In addition there are those people that buy FPGA and even Video Card based systems for big money on eBay without spending 15 minutes researching what type of returns they'll get and how long the payoff will be (or whether it actually make more compared with power costs).
I did what others would do which was to read the basics on the first page and go to the last page and see the charts, get excited and be ready to trade. I can guarantee you there are numerous people that are trading it right now without doing analysis and without REALLY understanding what they are trading and what the risks are. That's why I asked the questions - they are tough questions, but in reality, I believe they are THE questions everyone should be asking. They need to say "that's awesome, but look at how 80% of the profit is lost to commissions - what type of risk am I looking at?" and need to understand the disclaimers that you accurately show. They need to appreciate it all before allowing themselves to trade a single Bitcoin.
Look - I'm certainly no big time trader, but I AM experienced. In 2008, I programmed my own systems to store, analyze and trade the Forex market. I had some very creative and very impressive (if I say so myself) pieces of technology, but it didn't matter. I didn't appreciate what and how I was trading and my system backfired and I lost massive amounts of money. I was very fortunate as I was able to fully recover and it didn't cost me my house, my family nor my future - many others are NOT so lucky and lose everything. That may seem like an exaggeration, but greed is a powerful emotion and the idea of having 500% returns in a short period of time is tough to pass up.
I am very sorry to hear about your loss and I agree with you 100%. The majority of people simply do not appreciate risk until they experience devastating losses. It really is something that is only learned through experience.
Best of luck in your future trading