Expenditures have gone up significantly under the last two decades. Even if you want to excuse away Obama's spending as justified to "fight the Great Recession" the overall spend on entitlements plus net interest expense is going to be greater than the long term government revenues of ~20% of GDP. No matter what you think about particular types of spending (social welfare vs. defense, etc) hopefully everyone can agree this level of growth isn't sustainable. And yes, entitlements will need to be examined somewhat although I'd agree that far more reductions can come from the national defense side and some other discretionary spending.