You asked, so I'll answer.

Life begins at conception. My reasons for this are such. No male feels like a murderer when he wastes semen and no woman cries about lost eggs during menstruation, but after conception it is possible to emote over a loss of that life say after a miscarriage or abortion.

OTOH, humans have little problem ending other human life at any stage if it suits them through abortion, murder or war and their conscience will forgive them, which given enough time it always does.

As I mature I find that my opinions ossify, so that writing and speaking do not alter them.