With the hope of getting out of poverty or to make themselves financially better, gambling will be chosen. Initially, they don't understand about the aftereffects of gambling. As time passes slowly, the money starts to dissolve, and they start realising the other part of gambling. When this happens, they won't have control over their activities. This makes them go further, spending as much as possible to recover what they have lost and quit gambling. This is a never-ending process, where very few realise that going behind the lost money is going to cost us a lot. Rest of the people who keep going end up in poverty or suffer a lot to survive.
Recently in my country, a person lost around $20k in gambling, which is his lifetime savings. He wasn't able to take care of the family, and the guilt made him end his life. Now the sufferers were not only him, but the entire family who were depending on him for survival.
I would not be in doubt that those who ends up going bankrupt do had stable source of incomes where they are much confident of generating incomes on daily, weekly and even monthly basis but because they think they could go into gambling so that they can make some specific huger amount of money on their winnings, they stupidly tends to take their jobs unserious but focuses more on gambling because playing gambling is not so stressful as going to offices or reporting to their point of earnings meanwhile... They keys in ignorant to understand that gambling can not be a reliable source of income but supposed to be played occasional so that we don't end up lavishing our savings there.
The fact is that some gamblers are just made up their minds to retire on gambling then on a long run then looses everything up to extend they can not afford even $1 to play further after loosing their lifetime savings and after slacked to take their source of incomes serious.
Probably out of frustration they ends up taking their lives themselves without undermining they have families and responsibilities who are depended on them.