Comment by dhruvmittal

> Especially that productivity boost when every one starts leaving, and I _was not able_ to finished the smallest one of my tasks planned for the day 'til then most of the time.

This is super true for me as well, to the point where I structure my day around this. I'm lucky to have a workplace with flexible hours and enough seniority that nobody complains when I roll in at 10, which gives me a few "quiet hours" from 4-6 as others trickle out.