Why cant a parent kill their own child? After all, they created the
kid. Doesn't that give them the right to kill the kid too? Some
children are just plain evil and deserve to die !!!

And, come to think of it, why cant someone kill their spouse?
After all, when you married that person, they became your possession
and you own them. That gives you the right to do whatever you want
with them.

Besides, when you got married you agree to love them till death. But
sometimes love fails, and you have to help speed up the death part of
the marriage contract !!!