There are definitely many people who make a living trading forex. There might not be a lot of them on this website, but it is very possible. I am doing it right now, and I've only been trading for 2 years. The last 2 years of my life have been an intense study and observation of various markets (including forex). I am not making a very good living at the moment
, but I make enough to get by, and grow my account. Soon enough, I'm confident that I'll be pulling plenty of money out of the market to live off of and still grow my account.
It is a very challenging task, though. No doubt about it. Anybody that wants to be able to do this, better be determined and patient. I believe most people are capable of successfully trading currencies, if they are patient and determined.