Have you ever had a perfectly normal day but just wanted to disappear?
I really don't know what a "perfectly normal day" is.
So, assuming I had one of those, would I want to disappear?
No, not really.
Disappear. Do you mean die? Do you mean to never have existed? Do you mean to exist but be invisible to other people?
Sorry, the idea of disappearing has never been a concept that I have considered.
I am grateful and happy to be alive, and experiencing another day with all of its ups and downs.