Why are Catholics anti-abortion?

Like if a Catholic teen gets pregnant, they'd rather keep the baby than get the abortion and finish their education. They also believe it's right to have children, but I personally don't and never will. Why are Catholics anti-abortion? Why do they look down on childfree people? And why do they believe that... show more Like if a Catholic teen gets pregnant, they'd rather keep the baby than get the abortion and finish their education. They also believe it's right to have children, but I personally don't and never will.

Why are Catholics anti-abortion? Why do they look down on childfree people? And why do they believe that peopel must have kids?
Update: I'll have a vasectomy before I get married and have sex.
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