Gambling: Beneficial or Costly

I'm sure you all have heard of Wayne Gretsky and his alleged acts of being involved in an illegal gambling ring. I'm also sure that most of you have started to weigh the evidence, and have also started making your own decisions on whether he was or was not involved. Well just for the sake of things lets say that he was involved. What things would Gretsky have taken into consideration when deciding whether or not to gamble? Basically, what did he compare to make this decision. I'm sure that he thought he could definetly benefit from the earnings he would make from placing bets. I'm also sure he considered the benefits of getting other people involved. However, did he consider all the costs? To make a good decision he would have to consider what would happen if he got caught, would the money he made doing it out weigh the money he would spend defending himself, if he got convicted what would be the cost, and also how much he values public opinion or the negative opinions that would come with him getting caught. So the big question that is being asked is did he weigh all the costs, and if so did he make the right decision. Did the benefit out weigh the cost? If he did gamble, did he make the right decision in doing so?