In general terms I think that the game should be for everyone as long as they meet some simple conditions:
1.-Be responsible,
2.-Know how to manage your risk with money,
3.-Be of legal age,
The way you handle emotions and all this depends on the type of Personality and emotional Intelligence , these things are more Personal but one starts from something very Fundamental , if you are an adult you know that you must face things as they are, in fact things are almost Always done well when a person takes responsibility and assumes it as it should be, and not go crazy.