Going to heaven

I once overheard a child say, "I hope I go to heaven."  It is a wonderful thing to hear, especially from a child.  I am sure that most adults hold the same sentiment, but the thought occurred to me, do they understand what this means?
You have to begin with getting a definition of heaven.  What do they think heaven is?  From where does their definition of heaven come?  Also, from where do they obtain the concept of heaven?  From Christianity? From Islam?  From Mormonism?  Etc, etc.  Unfortunately, in many cases, heaven is a self defined concept, fabricated from one's imagination.  Obviously, a self created fantasy land doesn't really do anyone any good.  If one wants to base a belief in heaven from Christianity (for example), one needs to actually understand then what that looks like, from an authoritative source.
Heaven, in Christian terms, is not a mere amplification of worldly pleasure.  Heaven is an eternity in immediate, constant communion with the three persons of the Trinity.  Absolute love, absolute perfection, complete and perfect sinlessness in perfect harmony with God and man.  Like a historic church, right communion with God takes place in right communion with others, it is never "just Jesus and me".  Just as God has perfect communion in himself as three persons, we too can have perfect communion when that communion is between us, God and others.
In the same manner, if someone is looking forward to an Islamic paradise, that definition should come from the Koran, not the imagination.  So too with Mormonism or any other.
My point is this: if someone is looking forward to a Christian heaven, then that heaven is defined by the church.  If someone does not desire to live a Christian life, if someone does not love to be part of a Christian congregation, then they will not love a Christian heaven.