I think i gamble for the same reason many other people gamble, for a chance of profit.
I also watch people on Bustabit winning & say "well this isn't too hard". Then when i try it, its extremely hard.
Many do gamble for that reason alone but I have always found that a little bit surprising after all at this point in time it should be clear to anyone the existence of the house edge and how that guarantees over the long term your inability to make profits out of those games and yet somehow despite this knowledge people keep betting thinking they can somehow beat the casino, to me this does not make sense, maybe this is because I gamble only to entertain myself from time to time and I do not care about making money but still it is something mysterious to me.