The problem is that quite a number of the homeless would not, and cannot, return to the society. Some are addicted to alcohol. Many have mental issues.

While reintegration may help some of the homeless, most of them likely need a different approach if we want to somehow relieve their plight. Something more geared towards medical and psychiatric help.

Look at the statistics: the vast majority of homeless people are homeless because of simple economic problems like the loss of income or lack of affordable housing, and a minority have mental illnesses or addictions.

I would appreciate a source link, if you have one handy.