This is where we, as mortals get it all wrong IMO.
God put us here to die... to ultimately be in paradise with him. Really, really strong spiritual people do no fear death, but look forward to being with God. Our feeble minds cannot comprehend the peace, love and beauty that Heaven holds... says so in the Bible. Earth is NOT paradise, and life is not easy. What we do with our time here on this big spinning ball is what matters, not how much we enjoy it. Regardless, someone who has true joy (not happiness, but joy), finds contentment in all walks.