I remember that even a few months ago I would see a few threads on people quitting their job without anything lined up even in the midst of this pandemic (e.g., https://news.ycombinator.com/item?id=22944314)
Would also be interested in hearing from those who quite their job during times of high uncertainty, e.g. 2008 financial crisis, COVID-19 pandemic, etc.
The first month I felt guilty leaving a paycheck. I really didn't travel much due to the pandemic. I did contribute to OSS and volunteer teaching high school students CS. It definitely got lonely, I think due to the pandemic, but I would say my break time was fair.