Hi, Creiddylad, I think we’re both pretty new at this forum stuff. I’ll put my two cents in here and hope that it helps…
I’m with you on serving others and seeking to improve our world. That’s what Jesus’ teaching was all about, right? But God has also said that we are to be holy as He is holy. That’s where all of this sexual purity (and a great many other things) stuff comes in…
You would probably be interested in reading some of what Pope John Paul II taught about marriage and sexuality in his “Theology of the Body.” (Especially look at Christopher West’s work in this area.) Perhaps you don’t have a great interest in what one of our popes has had to say… but I hope you will go with me for a moment and realize that what he taught comes from an ancient Christian ethic. (I would be happy to discuss with you another day, perhaps, why it matters so much what a pope has to say… but that’s another issue.)
Anyway, the Theology of the Body is wonderful stuff and brings great clarity to those of us that are seeking to understand these ancient Christian teachings. I’ve assimilated it this way: as the only creatures made in God’s very image (see Genesis), we alone have the ability to model who He is, and that is Love (see 1 John). His lives Love in the Communion of Persons of the Trinity, and we model it in a particular way in the relationship between a husband and a wife (remember, “it is not good for the man to be alone…”). We are authentically living in God’s image when our love is free, total, faithful and fruitful in our marriage just as God’s is in His Communion of Persons. Therefore, like no one took Christ’s life from Him (He willingly gave himself), we must love freely; as Christ gave every bit of Himself to us on the cross, so we must love totally; as even though a mother may forget her child Christ will never forget or leave us, so we must love faithfully; and as Christ’s work in our lives bears much fruit - most especially our hope of salvation! - so we must love fruitfully.
This is a pretty radical way of looking at sexuality in our culture! And the consequences are far reaching. Clearly something like infidelity violates the guiding principles of our love being free, total, faithful and fruitful. But these principles also shed light on why some of the difficult issues like contraception and masturbation are not good for us and hinder our authentic imaging of God. For example, contracepting individuals are not **free **in their engaging in sexual union, for the essence of contraception is an inability to say “no” to sex. And if someone can’t say “no,” how free, really, is their “yes?” Additionally, contracepting individuals are not loving their spouses totally; they are withholding their fertility. The sexual act says, “I give you all of me;” add contraception to the equation and it says, “I give you all of me except this thing that I want to purposefully withhold from you.” The contraceptive individual is also not **faithful **to the marriage vows, which in the Catholic Church explicitly include a promise to be open to the gift of children; this is one of the cornerstones of Christian marraige. And the way in which contraception violates the principle of our love being **fruitful **is obvious.
So here’s the point: masturbation is a distortion of this call to love like God loves. It is compulsive, self-centered and the antithesis of fruitful. It doesn’t make us better people; when we masturbate we don’t grow in virtue or holiness. The connection between being “good” and being “sexually pure” is very strong because our sexuality is holy as it is a primary way that we make God’s image known in the world!
Hope this is helpful! May God bless and guide us all!