Don't do binary options. Please don't!
They are a scam! I think that has been well documented on the web by now.
I guess some people just don't care. I don't understand how you don't care if your screwing someone over though.
There are two things to note here. First is the broker for the binary options. If the broker or site where you are playing binary option is shady then of course you will be scammed. But even you are able to find the trusted broker, then again the binary option is itself very risky and a wrong selection will make your money lost. That's why most people think binary option is scam.