Hooray, yet another Catholic!
Generally speaking, I think that Christians do acknowledge that adultery is a grave transgression, and they do repent about it. And then they fall again, and repent, and fall again. I am not entirely convinced myself that sex out of wedlock, when no adultery is involved, is as grave a transgression — it's not ideal
, but it seems to me that if no oath- and trust-breaking is involved the matter is not as dramatic.
But as for the "few people would get in Heaven", I have to refer to the Catechism of the Catholic Church, article 1861, which says that
Mortal sin is a radical possibility of human freedom, as is love itself. It results in the loss of charity and the privation of sanctifying grace, that is, of the state of grace. If it is not redeemed by repentance and God's forgiveness, it causes exclusion from Christ's kingdom and the eternal death of hell, for our freedom has the power to make choices for ever, with no turning back. However, although we can judge that an act is in itself a grave offense, we must entrust judgment of persons to the justice and mercy of God.
edited 8th Apr '12 1:17:37 PM by Carciofus