Well.. *Pause to think if I should continue*.. as I realize I'm once again may swim alone against the current on this thread
IF (a very big IF) you (a generic you, of course) as parents strongly believe in God, and you KNOW without doubt that God is real & through the ups and downs of your lives, you SEE what good faith has done to you, then why don't you want the same thing for your kid?
I can understand non-believer parents do not want to direct their kids toward God, but I can never understand why Christian parents would want their kids to "believe in whatever they choose when they grow up". Wouldn't you want to bring them up in your faith?
For me, I would do my best to instill the Catholic faith in my kids. Of course, I won't do it forcefully, and I won't steer them away from any questions they may have that surely will arise as they grow up... BUT, I'll do it by taking them to Church with me every Sunday, setting good examples for them, teaching them to pray to God, showing them who God is and what God does, and how they can be like-God to others. With God's grace & my efforts, I pray that they'll remain in their faith throughout their lives.
The best thing I inherited from my parents is my faith, and I would hope to be able to pass it on to my kid.