In order to pay for something, you have to have money. Simply put, the government is saying that our taxes are their money. It's not government's money - it's our money. The government doesn't pay for anything. Government certainly doesn't pay taxes.
Government takes taxes, and government spends taxes.
Those taxes are our money, and government has a responsibility to take and spend taxes with the people in mind. When government claims ownership of this money, they start spending it not with the people in mind, but with the government in mind. Your FICA payments have been the first victim. This year, for the first time ever, our government has claimed ownership of our Social Security payments, and instead of putting them into the trust fund, used them as a new income tax to claim a balanced budget. This year there is no promise.