In my experience from years ago the reason it takes many more steps to get home from the bar than the amount of steps required to get to the pub are:
A. One has to retrace their steps for refills. In the old days taking a six pack for the walk did not work because I had to make five more trips back to the pub to use their opener.
B. The fact it is daylight when one goes to the pub and it easy to get lost on the return trip in the dark.
C. If the wife is asleep when I finally arrive...the next morning I can truthfully her the earliest time I left the bar.
D. If you think the wife will still be awake it is best to call home and tell her NOT to pay the ransom as you think you can get away.