Taurus is a sign that loves to have comfort and stability within their lives. In many cases, marrying at a young age offers a Taurus the comfort and stability they seek in life. If the Taurus is given an option to marry young and have a comfortable, secure, and stable life or not marry young and not have a very comfortable and stable life, they will most likely get married and have a stable life.
Cancers are very emotional individuals, and they become pretty emotionally attached and dependent on their partners. Cancers do not easily give up on love, and they tend to cling and hold on to those they love. Because of this reason, Cancers do prefer to get married at an early age because they want to have that assurance that they will have the person they love in their life forever. Cancers usually do not hesitate to get married at an early age if they are with somebody they genuinely love.
Libra is the sign of marriage partnerships and relationships. It is Libra's instinct to want to be in a lifelong partnership and marriage in their life. Most Libras will desire to find a partner who they love and who they really admire and form a stable, reliable relationship with this person for the rest of their lives. If the Libra finds the person who they feel they can spend the rest of their lives with, they will most likely marry this person at a young age. A Libra will not waste time.
Scorpios crave an intense, profound out-of-this-world connection with the person that they love. Usually, when a Scorpio finds a person that they can feel this deep sense of affection and love with, they will want to be with this person forever and for the rest of their lives. A Scorpio usually will not hesitate to get married to a person with who they feel they can spend the rest of their lives with and in many cases, a Scorpio can find this person at a young age.
Most Capricorns are rather traditional individuals, and your typical Capricorn does have this inherent desire to go through the traditions of what it entails to have a family. A Capricorn wants to have a traditional wedding and a conventional relationship. They want to have a family and most of your Capricorns desire to start a family and live this more conventional kind of life from a very young age. Many Capricorns will end up getting married and starting families from a young age because being mature and being responsible is what they're all about, and taking the responsibility for a family and marrying young forces them to become mature and accountable which is their ultimate desire.