The government has been shut down in the past due to weather, In the final analysis, the only real repercussions is that a bunch of over paid employees get extra vacation time.
It should be shut down - except for essentials - which is defined as the common defense. The rest is an inconvenience, but hardly a catastrophe. And in the end, the truth is we are broke. Liberals think you can just print money with no repercussions (Keynsians). That has been shown to be a fallacy.