It can act as an additional revenue source thus allowing you to cut on the hours you work per week. If you can train yourself, or find a proper mentor. Though I think a proper mentor is the real bottle neck, so too many try to train themselves and lack the proper knowledge for where to start; too many go to CNBC to start..

If it became mainstream it would just mean more volatility which for me.. volatility is a good thing. Yet were not even close to that, not many trade. Which is fine too, adaptability is key. I think the "you can't" stuff really flows out to other areas of the economy, e.g. starting up etc. So we get into this thing were people don't even try, or they try and fail once and don't bother getting back up. Granted, having a family etc is problematic .. though I do know someone who failed thrice starting businesses while being a mother of 5. That has to be pretty challenging and seeing her persevere tells me many more can be successful if they get past the initial hurdles.