I'm an atheist, so for me heaven is the best sensation I could ever feel. Maybe our world is the only heaven, and we just don't recognize it - so we waste and destroy it...
Have you ever watched "Love Story"? There's a scene where Jenny explains why she's not Christian: «How could ever exist a more beautiful world than this? What can ever be more beautiful than Bach, than Mozart, than you?»... So this might be an answer!