When the majority of my country's citizens are sick (aka "unable to work"), virtually all of their financial benefits disappear (even in my great country, the USA) because they have no universal health-care and non-wealthy parents.
This isn't unique to the US. Very few countries allows you to have the government pay your bills. Even known "welfare" countries aren't even going to put up with that without requiring you to cut substantial costs. So if you got kids, mortgage, partner you're pretty much stuck for.