I do not believe that we are born into sin. I Believe that we are going to sin. What we are born into is imperfection which brings about physical death and spiritual death this is what Adam left the world with. Because of imperfection and spiritual death we are subject to sin which draws us further from God.
Of course your free to believe what ever you want. I'm just going by what the bible says, it seems to be pretty clear to me.
Ecclesiastes 7:20 - For [there is] not a just man upon earth, that doeth good, and sinneth not.
Psalms 51:5 - Behold, I was shapen in iniquity; and in sin did my mother conceive me.
Psalms 58:3 - The wicked are estranged from the womb: they go astray as soon as they be born, speaking lies.
Romans 5:12 - Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:
Romans 3:23 - For all have sinned, and come short of the glory of God;
Romans 5:19 - For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.
Genesis 8:21 - And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man's sake; for the imagination of man's heart [is] evil from his youth; neither will I again smite any more every thing living, as I have done.
Jeremiah 17:9 - The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Proverbs 22:15 - Foolishness [is] bound in the heart of a child; [but] the rod of correction shall drive it far from him.
Job 15:14-16 - What [is] man, that he should be clean? and [he which is] born of a woman, that he should be righteous?
1 John 1:10 - If we say that we have not sinned, we make him a liar, and his word is not in us.
...that's just for a start.
I don't see any mentions about there being exceptions if you are a child in fact the opposite said. I don't know how many here believe in the bible or even follow it. You can follow your own beliefs all you like. I'm not against the idea's you express if you could show them to me in the bible I'll be on your side.