A Modest Proposal?

One question that bothered me as a young Catholic: do babies go to heaven when they die? If not, what marks the threshold of celestial eligibility? Baptism? First communion? Absolution? Confirmation? This line of questioning leads to another, which I found disturbingly yet delightfully morbid. Disturbing for obvious reasons, delightful for its potential as dogmatic paradox.

The Spaniards in Mexico and Peru used to baptize Indian infants and then immediately dash their brains out: by this means they secured that these infants went to Heaven. No orthodox Christian can find any logical reason for condemning their action, although all nowadays do so. In countless ways the doctrine of personal immortality in its Christian form has had disastrous effects upon morals...

--Bertrand Russell, "Why I am not a Christian"

Comments, please. Preferably from Christians.