Two nights in a row he didn't know what was happening because his daughters 'made' him drink wine (where did they get it all?)?
Normally boozed up old men can't get it up.
Lot had a better diet and exercise plan than the American men of today. They didn't need viagra back then. They had rutabagas, figs, olives and grapes. It's not as tasty as wonderbread, sausage biscuits, ice cream, hamburgers, hot dogs, pizza, lasagna, hot pockets, TV dinners, Mcdonalds, Burger King and all other American feasts of treasure. They also didn't have the vast transportation that we enjoy today or the luxury of harvesting food from a grocery store. Men back then were a lot more active.
A 50 year old man in the ancient days of the Mediterranean probably didn't experience erectile dysfunction as commonly as a 50 year old man living in the United States in 2015. I'll chalk this up as a non-issue even though it has been brought up several times in this thread.