I have been reading through the comments while at work - so I hope that I haven't missed anything about what I am going to mention. Also, I haven't read through the whole site so it could be addressed elsewhere.
Why do some assume that children go to heaven? I have never read anything about this in a bible. Is there some verse to clear this up?
Welcome! I'm sure there is a verse to clear up pretty much anything in the Bible! Let me dig a bit!
Here you go: http://www.godandscience.org/doctrine/babies_who_die.html