(I apologise in advance for my apparent ignorance on this) but are we sure we properly actually understand why people are homeless? Is there a proportion of ho

(I apologise in advance for my apparent ignorance on this) but are we sure we properly actually understand why people are homeless? Is there a proportion of homelessness that is to some extent - although I hesitate to use this word - "voluntary"? Is there really nowhere else to go other than to sleep on the streets?