Reverse the question and address it to yourself.
Can we afford any of it?
Money doesn’t grow on trees
It grows from an increase of wealth. Have our SS contributions been used to increase wealth?
If so, we have plenty profit from SS payments to pay good benefits.
“Can we afford any of it?”
Do you believe we can afford foreign aid? And nation-building in Iraq and Afghanistan (where we fund health care, education, and infrastructure)? If you do believe these expenditures for foreignors are “affordable,” why do you object to spending money on Americans at home?