What are 'signs of forgotten ideals'? (Lines 3 - 4)

Answer this question based on the following passage.

            The ills of the modern home are symptomatic. Divorce,
            childless families, irreverent children, and the decadence of
            the old type of separate home life are signs of forgotten
            ideals, lost motives, and insufficient purposes. Where the
(5)        home is only an opportunity for self-indulgence, it easily
            becomes a cheap boarding-house, a sleeping-shelf, an
            implement for social advantage. While it is true that general
            economic developments have effected marked changes in
            domestic economy, the happiness and efficiency of the
(10)      family do not depend wholly on them. Rather, everything
            depends on whether the home and family are considered in
            worthy and adequate terms
            They who marry for lust are divorced for further lust.
            Selfishness, even in its form of self-preservation, is an unstable
(15)      foundation for a home. Essentially the problem is not one of
            mechanics but of persons. What we call the home problem is
            more truly a family problem. It centers in persons; the solution
            awaits a race with new ideals, educated to live as more than
            dust, for more than dirt, for personality rather than for possessions.
(20)      We need young people who establish homes, not simply
            because they feel miserable when separated, nor because
            one needs a place in which to board and the other needs
            a boarder, but because the largest duty and joy of life is to
            enrich the world with other lives and to give themselves in
(25)      high love to making those other lives of the greatest possible
            worth to the world.