The seven sacraments · Question 1.2
“A baby understands nothing — isn't baptizing one forcing religion on them?”

Baptism — a new life that begins with water
The Church's answer: Infant baptism is not a ceremony that stamps a child as the parents' property; it is asking, on the child's behalf, for the life God gives first. Parents, godparents and the community promise not to shut down the child's questions but to show them a faith that is actually lived, and to help them understand it and answer for themselves as they grow.
An analogy — the language handed over first
A child learns a language from the family long before understanding everything it means, and grows up to ask and answer questions in that language. The analogy shows only this: parents hand on a foundation for life before the child can choose it, and then have to help the child respond freely. It does not mean faith is the same thing as a language, or that parents own their child's conscience.
If they press further: “What if the parents have no intention at all of passing on the faith?” — If there is no real basis for keeping the baptismal promises, don't rush; go back over the preparation with a pastor. A faith the family will actually live with the child matters more than hitting a date on the calendar.
In one sentence: “Infant baptism isn't a stamp that takes a choice away — it's a promise that the family and the Church will take responsibility, so the child can freely grow a gift they were given first.”