I agree that those who invest their time effort and resources into gambling is truly in illusion because making it in life takes hardwork and patience and not by betting and waiting for luck to shine on you so .
Any gambler that has no alternative source of income and is waiting for gambling to make him rich is in a dream and until he wakes up from it he will remain in that state for ever
Some might treat gambling as a way out of their lives, their poverty that's why they go and maybe have the dream that they can one day win big and change their lives for the better. But the question is what if it didn't happen? So that's where the illusion come into picture as they become delusional. But whatever the case maybe, as gamblers it's better to just play for fun and not put any pressure on us to win. It could be that win might come in any form or when we least expected. Maybe that is the real secret, don't force it, as we don't know that lady luck may came in one day without us noticing it until it happens in front of us.