Simulators are good but they really can't simulate how you will act with real money. When its actual money you will react differently whether you like to admit it or not. Trading is a zero sum game which means for someone to gain someone must lose so keep that in mind.
Please read my post above where I address it. And even though simulator sounds that it's easier, in reality it's not. I do see statistics of our users and only small fraction of our users are able to successfully perform in the simulated environment. You should give it a try, at the moment you are assuming it's easy, but it's not.