...plus little babies that didn't get baptized and the mentally handicapped get tortured there in a fiery pit, you ain't got nothing on that man.
Babies do not go to hell...
Jesus indicated that people who enter heaven are like children, implying that children go to heaven.
And He called a child to Himself and set him before them, and said, "Truly I say to you, unless you are converted and become like children, you will not enter the kingdom of heaven." (Matthew 18:2-3)
Then some children were brought to Him so that He might lay His hands on them and pray; and the disciples rebuked them. But Jesus said, "Let the children alone, and do not hinder them from coming to Me; for the kingdom of heaven belongs to such as these." (Matthew 19:13-14)
Thus, the Bible indicates very clearly that children who die go to heaven.
Hell is separation from God because people reject God with their own free will.
Babies and other such innocents, though born through original sin, do not reject God and do not go to hell. Keep in mind that some adult people professing to be God fearing Christians may also end up in hell because one can still reject God in their heart in many ways, even if they say "Lord Lord" with their lips...