http://www.dailymail.co.uk/news/article-3805885/Angelina-wanted-open-marriage-Britain-new-Princess-Diana-reveals-biographer-predicted-divorce.html

Rule number one - never ever take 'strong woman' or overly ambitious woman for a mate or wife.They are obssessed with status, money and power and if you will not deliver you will get dumped.So it looks Brad didn't want to follow into politics mud-shit to 'rise to power' and they are more 'alpha' men with higher status like politicians.Jolie has ambitions to become second mother Theressa or Princess Diana and such star needs star of equal brightness.