I have a close friend who's now 60,000 in debt mainly due to his online Poker addiction. Guy quit his job, lost his flat and owes loan companies and banks a fortune and is now playing it full time in the self belief that he is on a winner. Was so destroyed financially from it that he now plays with a sponsor he gives a cut to.
Since all online poker has to be published I check his stats from time to time, he's ranked really highly in many of the leagues but I think his actual take home when you account for buy ins etc from the last three years averages around 12,000 a year which isn't even anywhere near minimum wage when you factor in that he seems to play for around twelve hours, dusk till dawn, every night.
The man still likes to think of it as a cool job and has told a fair few people that he plays poker professionally. This is utter bollocks, he sits in a room all night by himself and clicks a mouse which, you know, could be a living but as I stated above, it's nearly impossible to come out enough on top for the sacrifice off all social activity. Not saying necessarily that online poker is anyway bad but I'm pretty sure that if you have an even mildly addictive personality, particularly for gambling, it is going to entirely fuck up your life as you don't even have to make the mental or physical effort to leave your room.