Last days at work are like a near death experience. For that matter last days anywhere, in a school, city, locality, relationship...
You are there, yet not there. Not participating just watching everyone go about their business. This Zen like state brings up a lot of stuff and also brings down your defences.
For starters the place seems not as bereft of the reasons for leaving it. The same qualities that first attracted you come alive again. The highs you shared come a-shining and everything seems soft and haloed. Everyone seems so much nicer and you suddenly make more friends and those big jobs and worries you sweated over seem less intense.
Sadly this omni vision is instantly erased from experience as soon as the working soul enters another work avatar and is left with only a faint lingering memory of what was and what could have been.