"Well since the destruction of a fertilized egg is a sin, the killing of a human being, the only way to make sure this doesn't happen again is to quit trying to have children. Do you have children? A miscarriage is one dead human. I advocate the ceasation of sex worldwide while we sort this out."
Painful as it may be, one cannot understand this issue unless one is willing to make crucial distinctions.
One must, for instance, draw a distinction between the early death from natural causes of a preborn human--such as in your example of a miscarriage--and the deliberate killing of a preborn human.
Your premise, that death from natural causes is the equivalent of deliberate homicide, would appear to be just a little difficult to defend.
Oh how easy it is to rationalize when it's your own ox that's getting gored. No sale bub.
With every pregnancy the couple makes a concious decision to accept the possible detroyed embryo via miscarriage. That is a concious decision to contrubute to the death of a human being. Now deal with it.
As I said, I think we should have a world-wide moratorium on sex until we sort this out. Quick, think of a god awful title and get that thread up.