We want to go to Heaven because that's the place where we humans
were meant to belong from the beginning. It is a place of eternal
happiness indeed, but whether or not it is similar to the idea of
utopia is debatable, since that would largely depend on what utopia
is. If it only means what is conceived by the human mind, then
eternal happiness is not the same thing.
It cannot be that we can be in Heaven when we are on Earth, because
it is basic Christian theology that the longing in the hearts of
men can only be satisfied by the supernatural, that the entire
creation cannot fill the void that is in the heart of 1 single
person. It can only be filled by what is described in 1 Corinthians
2:9 as 'the things that no eye has seen and no ear has heard,
things beyond the mind of man, all that God has prepared for those
who love him'.
You have exhibited near complete ignorance of Christianity. You use
what YOU THINK are the teachings of Christianity (which are
misrepresentations) and you attack these. But these are mere
strawman arguments. Please, do your homework first and try harder
if you are serious about discrediting Christianity.
regards,
obiterdicta