I'd like to merge with/become the same limitless energy I believe created everything in our world, and inhabits every living creature in our world, so that I can create new worlds and realities and explore them at will. If I can't do that then heaven doesn't exist to me. Ideally for me, physical existence is just like a boot camp/cleanse for the soul, and the horrific conditions (and good conditions) that exist are due to one's actions in a past life. That would sufficiently explain our suffering to me.
You can't give a mortal species the right to make their own choices, then remove that right to choose in death, and tell me that's heaven. That would be akin to a lobotomy, shutting off a part of our being/brain in order to have what another being deems to be some kind of peace.
You also can't tell me that I'm in heaven while some of the people I love have been sent to burn in flames for eternity. Once again it would take a metaphorical lobotomy for me to have any kind of joy or peace knowing that.