lendaddy,
Probably the quickest thing to do is go to the link I have attached, read the first two paragraphs and the scripture associated that is listed. If you read the first two paragraphs, that will pretty quickly make it clear it is not intended for babies. Read the whole page, and tell me if a 12 month old can understand any of that. The meaning of baptism is much deeper than its made out to be by many.
Requirement? Romans 6:4 does it for me, also found on that page.
Regardless, not doing a baby baptism is not an excuse for *not* bringing up your children to know Christ (not ever guiding them towards salvation).
http://www.bible.com/answers/awbaptiz.html
I've had exactly the same discussion with others before; and you'll find that baby dedication usually makes the grandparents pretty happy. Don't turn the subject into a negative for it surely doesn't have to become that.
God bless-
BG