TheDevil - I take your point that we are all individuals, but we do not exist in isolation.
We live as part of a society, and as such, we have responsibilities to members of that society, as it has responsibilities to us as individuals.
To simply dismiss someone's situation by saying, effectively, it doesn't affect me directly, so it's not my problem, is not an attitude that will enable any civilized society to exist and to move forward.
We have to understand that not everyone is able to live their lives free from issues which are of their own making, but that in itself is not justification for simply abandoning them to their fate.
In this instance, the proliferation of gambling is having an increasingly negative effect on our society as a whole, and we are all indirectly affected by it, and as such, it is our responsibility to address the issues that proliferation raises, and work out if it needs to be curtailed for the good of society as a whole.