These aren't the cases where it is obviously a mistake to kick. It is the 4th and short or 4th and VERY short where coaches still punt (sometimes in opposing territory!) that are pretty clearly bad decisions...The actual conversion rate on 4th and 5+ is 36%. Given that knowledge, how often do you think coaches should go for it on 4th and 5 in their own half of the field?The reason coaches don't go for it on 4th down more often is based on the fear of failing. It is well proven that the human mind puts more value on failure than success, this is called Loss Aversion. In the case of a football coach, if he calls a 4th down play and it fails the blame is all on him. If he calls a punt/FG and for some reason a turnover happens it is the player's fault, not his.