When one makes a vow to love and cherish, one is making a promise to love and cherish one's mate. To do that, one must focus on one's promises to keep toward one's mate. When one says, "I do!" It shall be done!
Yes, marriage is nothing to play with at any time. One must know what one expects one's marriage to accomplish as well as one's mate. They both must know the goals of marriage in order to accomplish a loving and respecting marriage.
Love and respect are what one sign-up to give in a marriage. One should always be willing to give one's best.