I don't necessarily think the deficit should be ignored, though I do think that at this point in time the employment situation is far more destructive than the deficit, and also much more amenable to corrective measures that would actually help on a meaningful time-scale. But IF you really believe that the deficit needs to be addressed sooner rather than later, you need to look at what is contributing to it. The Center on Budget and Policy Priorities offers a
very telling discussion of this, with a useful chart. No surprise: Bush's tax cuts for the wealthy and the wars are among the biggest contributors.
Take-home message: irresponsible Republican policies have caused the problem that Republicans now want to fix by reneging on longstanding social contracts.