For those of us raised in a Christian religious household, there were certain expectations made of family members. Mandatory Church attendance one or more days a week, tithing, outside Church activities, Sunday School, perhaps other Church related activities that we may have actively resented being forced to participate in. And we end up with the desire to never place our own children in that position. Now I am of the group who feel that raising your kids in your own faith won't cripple them. It's fine and dandy to teach them that all religions have validity, but by not giving them a faith, you can very well indeed cripple them.
Faith is an important part of our lives, inside and outside of religious matters.
For example, our faith in those we love and who we know love us gives us a security we not only need, but thrive upon. Having that faith in Deity is just as important. For we know that no matter the situation, no matter how low we may feel we have descended, that there is Someone who loves us still, and Who will bolster us with Their love. That's some pretty powerful magic, and a more powerful spell than that, I cannot imagine. My son has a private relationship with the Goddess that I am unable to fathom.