because they want 6 lane highway
1- The person doesn't understand HIM/HERSELF, their priority.<br />
2- pretending to be someone else. Hiding their flaws till after marriage.<br />
3- The delusion of changing their partner instead of loving him/her the way they are.<br />
4- taking marriage and love for granted.<br />
5- lack of honesty.
Do you really believe that all the married people are uncommitted?
Commitment takes character. That's what you marry - not someone's personality, niceness, looks, care, love, or anything else. In the end it's their character you end up loving or despising.
To many people like the idea of marriage or have been told marriage is a step in life that needs to be taken, but really don't know what it takes to make a marriage work. For others still it's nothing more than an adrenaline rush and once that feeling is gone they go looking for their next "fix". Still others marriage is nothing more than a status symbol much like their new car, house and other possessions they own ... it's disposable and when it gets to old they go looking for the newer updated model
lack of loyalty
Maybe they married the wrong person, maybe they or the other person changed too much... Who knows; each relationship is a world unto itself.
Nothing good on TV?