Sperm can’t feel pain. They don’t have a nervous system.
Takes 2 seconds to look that up.
As for murder, it ain’t a human being until it fertilizes an egg.
Sperm is not a human being.
An egg is not a human being.
What a woman aborts, is a human being, not her.
Cancer that is removed from a person is their body.
A baby is an independent person genetically different from the woman. Its not a persons tumor that is 100% genetically them, their cells.