Having been in the situation myself I must say it sucks! I lost my 1st home to foreclosure, but it was a situation that my wife and I brought on ourselves.....I would wager that is the case in most instances of foreclosure and bankruptcy and even homelessness for that matter.
Not to sound unsympathetic, but there have to be consequences to poor decisions....I know that there are some that end up in these situations through no fault of their own, and they truly have my pity.
We can't save the whole world....it just is not possible.....and in this case the cure would feed the disease : give the homeless a free place to live = more people becoming homeless.
There will always be victims....villans....cracks in society .......and man eating lions.
I think the best we can do is positively affect as many people as we can in life, and try to inspire those less fortunate than us to achieve more....and give from the heart.