The GOP self-destructing into a party that couldn't obstruct would be best for everyone and even Republicans should recognize that. It's not productive to have a major political party who shuts down the government over political reasons.
I think that it goes beyond this though.
Since Nixon's Southern Strategy in 1968, the GOP has used racism, homophobia, sexism, xenophobia, and a host of other issues which prey on people's social fears to win election. However, few Republican members of Congress were true believers. The GOP after Taft was the party of choice of the nation's wealthy elite and after the New Deal had subjected them to higher taxes and greater labor regulations, they began to fear that the US would slip into socialism, so they fought back, first with the bailout of NYC in the early 70s and onwards, creating a very discordant ideological blend of pure liberal capitalism and social conservatism and inventing a fantasy of America as a "pull yourself up by your bootstraps" country. This fantasy appealed to people so they voted for Reagan, giving him massive landslide wins.
]On a scale of one to out of this world. how smug does it make you feel to
know your opponents are pure evil yet are able to illegitimately, wickedly, perhaps illegally, turn the majority's hearts and minds to voting time and again for pure evil?