In a recent column on the senior citizen lobby, I noted that Social Security is often "middle-class welfare" that bleeds the country. This offended many readers. In an e-mail, one snarled: "Social Security is not adding one penny to our national debt, you idiot." Others were more dignified: "Let's refrain from insulting individuals who have worked all their lives and contributed to the system for 50-plus years by insinuating that [their] earned benefits are welfare." Some argued that Social Security, with a $2.6 trillion trust fund, doesn't affect our budgetary predicament.