The biggest factor for me personally was that I could not remember what I did a few days ago. I would come to into the office and start working on the current p

The biggest factor for me personally was that I could not remember what I did a few days ago. I would come to into the office and start working on the current problem, and the day just went by. It was like 8 hours just disappeared into the ether. Day after day. Nothing memorable about them.