[frposty]

“You are entitled to your own opinion but you are not entitled to your own facts”

There are no concrete facts upon which to base a conclusion about the start of life.

Upon further thought, I believe that the act of conception is sacred. Were one of my children to get pregnant I would not advise an abortion unless it was apparent that it would avert a larger disaster.

[aruanan]

There are no concrete facts upon which to base a conclusion about the start of life.

Sure, there are. That first cell formed by the fusion of the gametes is the simplest possible form of a new, genetically distinct individual. Be it ever so humble, it's a new life. Of course, many of them never make it to implantation or to full prenatal development or post-natal development or to adulthood for one or another reason, but all of those reasons have this in common: they ended life.

[TigersEye]

There are no concrete facts upon which to base a conclusion about the start of life.

Except for metabolic functioning like cell division. Or initially; the almost miraculous combining of two cells which individually are incapable of mitosis into one cell that is.