I'm not saying Scripture is silent on these (or other things).  What I am saying is that the lens through which teaching is derived is based much more on Platonism than anything Jesus would have recognized.  The only reference to contraception in Scripture is that of Onan, and it is obvious he was trying to grab his brother's legacy and property for himself.

The real problem here, of course, is that these discussions are really ill suited for this type of forum.  It is far too easy for people of good will and love of God to talk past one another.