Beyond the government provided safety net, there is also the factor of social and cultural structures. E.g. in south asian cultures, if you belong to middle class and above, short of calamity, you will not be homeless because it is quite normal for folks to live with parents anyway. Worst case, you can just move back in anytime (bit of that has happened in US as well recently).

Of course, cost of living is a big factor anyway. In asian countries, government provided safety nets are rare but since everything is so cheap, at worst you can still manage to eke out a living and find, say, a single room in not-so-great locality.