The existence of that small minority doesn't even undermine the welfare system, never mind society as a whole, is what I'm saying.
It would depend on what kind of system you want
, or intend
to have. A relatively wealthy system could extend charity to members who (for example
) are physically or mentally incapable of providing for themselves. But it does in a way "ruin" the system when you have others who are generally healthy, but who milk from the system simply because they've found a way to do so. It undermines the intent of the system, as it was established. It's a form of fraud.
What you're removing
from the system could be better employed elsewhere. Or not be put into the system in the first place, there by reducing the burden upon the general population.