There is only one sane choice. People who abstain are choosing insanity the same way that those who abstained in 2016 allowed insanity to prevail.
Having said that, I think voters would be pretty excited to get out and support a candidate that they had actually chosen in the primaries after seeing them go through some campaigning and debates. None of us chose Kamala, and Biden's late dropout was not ideal. I am hoping that America can have this opportunity back in the next election.