Perhaps you should address the question across the aisle.
The premise is that there are conditions in which deficits are unavoidable—for example, if the economy collapses, like in 2008. Even if you had a balanced budget, you couldn't cut spending fast enough to keep up with the drop in revenues that would occur. I agree with the basic premise that we should be building up surpluses during good times because there will inevitably be bad times.