your infant children should be in worship services. Written from a Roman Catholic perspective with some good thoughts.
…While I respect the intention behind it, a parent who leaves a child at home “until they are old enough” is being unjust regarding the child’s religious education. Education begins unconsciously before it begins consciously. Your baby or toddler needs to be given the opportunity to learn the rhythm, sights, sounds, and smells of the Mass before he is conscious enough to understand the Mass. Robbing a child of the sensory education makes catechesis that much harder later on. Spirituality is primarily a sensory call (from God) that leads to a transformative response. Robbing a child of that early sensual experience of God and His Church is a very serious impediment to future catechesis and spiritual development.