“Eye has not seen, nor ear heard, nor has entered into the heart of man, the things that God has prepared for those who love Him.” (I Corinthians 2:9). Those words from Paul say it all.
I have been told by a very trusted friend, and read of many others, how they have died but came back to life. Some begged not to go back, others begged to return to earth. None said it was easy to find words to describe the beauty. “Words cannot describe the beauty,” is a common thing they say about it.
My friend, who has since died, was allergic to penicillin and ‘died’ in 1950. He told me that he talked to someone of power and promised to: “Tell someone about Jesus every day of my life if you let me go back.”
He got his wish, and did. He spent a lot of money on three-inch cassette spool tape recorders with messages about God. In his business he travelled widely leaving recorders with people. I was one who learned much from him. He told me quite late in his life of his ‘talk’ with someone ‘up there’. He seldom spoke about it, but never bragged about it.
Books have been written of similar experiences.
Be assured heaven is real. Jesus said so, and He is getting it ready.
A short answer is, "No".
Moses and Elijah, two Old Testament heroes met with Jesus at ‘The Transfiguration’ when God spoke and said: “This is my Son with whom I am well pleased. Listen to Him.” (Mt. 17:1-9). Those two guys had been dead for 500 years by then!
When Jesus told the story of heaven and hell, with the rich man in hell; there were other people with him in heaven.
See ‘The Rich Man and Lazarus’ (Luke 16:19-31) (see Bible Stories, the first one).
Paul wrote to encourage the believers in a city called Corinth, that the troubles they were having from persecution would not last forever: “For we know that when this tent (body) we live in is taken down - we will have wonderful new bodies in heaven, homes that will be ours for evermore, made for us by God.” (2.Cor.5:1).