Is it really worse now than ever? "Crazy times" are defined by our experiences in life. For most Americans, those experiences have ben relatively tame for decades, which makes today's situation feel quite unsettling. Just the same, the situation IS unsettling. Remember however, than in some countries -- even in this country (Think Civil War) -- such conflicts are fought with considerable cruelty and bloodshed.
Public service is a calling. Go for it. You can help make the country work despite the caustic brinksmanship of some members of Congress. Remember, for every self-righteous, hold-the-country-hostage ideologue, there are ten others trying to make the system work. Focus on those who create community and effectiveness despite the crazy context.
There is a famous Chinese blessing/curse, "May you live in interesting times," which are invariably accompanied by danger AND opportunity. Sure, be aware of -- and informed by -- the danger. And. Run with the opportunity. Your country needs you now more than ever.