Another thing that is sort of being overlooked is if the debate does go on, it will most likely go down as the most highly viewed debate in Presidential debates.  So the thing to look forward to is that Harris again will have the opportunity to "introduce" herself to the US and if she squashes Trump like the bug he is, then this race could actually be over by the end of the night on Sept 10. 

And another great thing is that Harris will have learned greatly from Biden's debate and not make the same mistakes.

Personally, my money is on Trump weaseling out (but then again, his narcissism may be so ingrained that he is unable to).