Trading is not for everyone. You can't just start trading without having any knowledge about trading. Trading are for people who have knowledge about trading, people who have take time to learn and understand what trading is all about. Trading are for those who have found out what trading is about.
Anyone can try to trade... and I think everyone should give it a try! It's the only way to find out if trading is for you or not! Of course, don't try it with everything you have, don't borrow money for trading if you don't have any clues about trading... but I guess anyone can spare some money and give it a try, and who knows, maybe you will find yourself in trading!
We are not born with knowledge and experience, it's something we get along the way! In that process, it's normal to lose some money (like paying for school), the point is the learn something from your mistake and losses, and try to do better in the future if you are able to... if not just quit trading and focus on something else!