While this is not the most important factor for a happy marriage, working skills are influential in the happiness of a marriage. This is because work skills allow you to develop, have financial responsibilities and independence and this is important within a marriage. Financial independence, for example, allows you not to depend economically on your parents and to build your life the way you think best with the person you love.
Because maybe sam wants a relationship like that but he can't get one and he feels lonely because his friends are paying more attention to their partners instead of him