Life Begins at Conception

...the famous mantra of the pro-lifers...

But then following that logic, why does the volume of the outcry of those claiming their desire to protect and preserve life seem to so greatly decrease once the umbilical cord is cut?

Rule # 1: You are NEVER wrong

Do not, DO NOT, allow for the exception that your understanding of things could be "wrong". This admits the possibility of fault in your thinking which you know cannot possibly be the case. Your experience tells you so...