For some homeless taking drugs is done to not die of other homelessness associated cause of death. When your on the street with no where safe and warm to sleep

For some homeless taking drugs is done to not die of other homelessness associated cause of death. When your on the street with no where safe and warm to sleep at night you may turn to drugs to keep you up and moving so you dont fall asleep and freeze to death or fall asleep and get mugged/raped/stabbed.