It didn't teach you any such thing. People don't learn about how to "deal with" tough situations or death through having a human life killed.It's a sad story, but it happened before I was born. But it certainly showed me at an early age how to deal with tough situations and death.
What it actually taught you, and you display it here every day, is to disrespect human life, including that of your killed sibling. Your mother taught you, through her actions of disrespecting her own child in utero, was that your biological sibling was nothing to give a second thought to.
Pretend you aren't reading this, but I know you read my posts, you just have no sensible replies.