Slashing spending while the economy is depressed won’t even help the budget situation much, and might well make it worse. On one side, interest rates on federal borrowing are currently very low, so spending cuts now will do little to reduce future interest costs. On the other side, making the economy weaker now will also hurt its long-run prospects, which will in turn reduce future revenue. So those demanding spending cuts now are like medieval doctors who treated the sick by bleeding them, and thereby made them even sicker.
Furthermore, this debt deal is nothing more than a Congressional game of passing the buck. They agree to fight about it later. And the GOP isn't going to be any more willing to compromise. It's frustrating.