People wouldnt procrastinate if there wasn't some evolutionary advantage... Personally, I have found that if I get on with certain tasks in a team environment with too much vigor, I start to get other team members feeling left out or feeling their input isn't adding value. Keep doing it and the team will fall apart. Sitting around and being lazy for a bit helps keep the team together and has more forward progress ove…
It is probably a poor defence of procrastination but it certainly does occasionally pay to put something on the back burner for a while to see if it actually needs doing.