The market operates whether you are in it or not, if you are in it then you can make money but the market will continue whether you do or you do not. Other investors will not only not give a fig if it you win or lose, they will generally not know you were even in unless you tell them. It's like interacting with a machine - I know some people have pet names for their cars, but it won't make it any more reliable, safer, faster or economical to drive.
Markets don't react to what you do either - 'I did this, then the market dropped to take out my stop before reversing...' don't allocate intelligence to a distribution system, especially if you are so small as to be unnoticeable within it, just learn how it works. (Which isn't all that easy in a complex system).
I think a fair number come in thinking it is easy money, possibly fuelled by the unusual bull market of the late 90's. They believe that the more you pay out, the better the software, data and advice you'll get, and with this 'edge' you can't help but make a profit. Low barriers to entry via spreadbetting ensure a steady influx of fodder for the SB companies at least.
It also goes without saying that when you do look at a trading program the signals absolutely jump out at you - 'at the hard right edge' the signals are often far less obvious, and you are likely viewing a chart preselected for its allure to begin with.
Lots of traps around, but they are often of our own making.
Dave
(By the way Soc, if I'm one of the 19 who disappeared or whatever it was you counted, I've been busy and only just got back! I DID leave T2W onscreen however.... )