The only reason to vote for the lesser of two evils is delay. But delay won't save this great country. Perhaps there is some truth to the idea that the sooner we reach the bottom the more pieces we will have left to recreate Christian America.
The only way to recreate a Christian America is to convert the vast majority of Americans to an actual surrendered belief in the gospels and to Jesus as their Savior, as you can't be born a Christian. The nation was founded by people who were professing and practicing Christians, and whether or not each of the Founders was so, all of them were at the very least Deists who accepted JudeoChristian social norms. Today, those social norms are not even practiced by the majority of nominal Christians.
Make no mistake; I am totally in favor of reinvigorating a society based on Christian principles, which in turn gives way for others to live here unmolested without forcing unbelievers to adopt the Christian religion as their own; and more importantly, builds support for people with those principles to take public office and run our institutions.
But holding one's breath and refusing to participate in a flawed human election process until a large-scale Christian reawakening happens, as the rigid purists vow to do, will do the opposite of helping it to happen.