The use of Birth Control is in no way associated or parallel to assault.  Fact is that most conceived zygotes never have the chance to implant.  No-one knows when there is soul and with the advent of cloning, we see that every skin cell has the potential to produce a zygote.  When religious complain that IUD's or rarely BC pills prevent the Uterus from implanting, they seem to not know that about 60 to 80 % of zygotes never get the chance to implant.  So Mother Nature, herself would be the most productive abortionist.  Who is responsible for Mother Nature?