The young quite expectedly question why one should abstain from behaviors now deemed proper by the established government and it's institutions.
Morals and Church History

Augustine of Hippo, a 4th century Christian Church authority, taught perfect sexual morality and it continues to be a longstanding  doctrine and cornerstone of the Catholic Church.  In the last 70 years under intense public pressure, the Church revised their long held stand and lost the key element in Augustine's message.  This has, at least in part, resulted in an out-of-control increase in unwanted pregnancies, confusion over sexual orientation, and has led to complaints of hypocrisy by the Church.

You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your brother's eye.” Christianity. Matthew 7.1-5

If sex may be for no greater purpose than a display of love and unity, then pre-marital sex, adultery, and homosexuality are good.  In truth, such behaviors bring unwanted children into the world, create jealousies, break-up of marriage, and confusion over sexual identity.   Central figures in religion warned of lack of discipline and of the vanity in seeking pleasures of the flesh.

Augustine taught that a desire for child must be foremost in the mind of both the man and woman, and without it the act is illegal.  Augustine wanted to see that good, mindful children were raised, and saw this was best ensured by the devotion of two loving parents, but those parents seeking not a child but immediate pleasures will not have the child first in mind, will fail to bond a strong family union, and may harbor resentments against both mate and child.  This is the "original sin" handed down from generation through generation that destroys the unity of family as every child is "conceived in sin",  brought into the world in an imperfect separated state.

An adherence to ancient religious principles will eliminate the problems and controversies of abortion, unwanted children, divorce, and confusion over sexual orientation.

More Information...

Religion and State

Morality