I'm Pro-Life, but not a single-issue voter. That said, what would a President Biden be? His stances, the the degree has any on which he hasn't flip-flopped are basically all the opposite of my views. And "unity" with people who hate me and attack people of my views? For me a vote for Biden would be like a sheep surrendering to a pack of ravenous wolves.
Elitist RINOs like Kasich obviously think people like me are stupid, but we're not. This bit of Kasich-ian stupidity illustrates why he was on my Oh Hell NO! list among R candidates in 2016.