This would make them earn a decent penalty after they died.
Indeed the belief in immortality caused most of the Egyptians artefacts. After death, bodies of the dead had to be preserved properly to prepare them for the next life. For instance, canopic jars would protect the head parts of the dead. Other internal parts of the body would be removes and be preserved, as well. The rest of the body would be wrapped with reed coffins, to dry quickly and then buried in wooden tombs. Additionally, belief in life after death made Egyptians make a book of death with a series of songs, pictures, texts made in papyrus, to accompany the dead. This book represents some of the Egyptians artefacts that made the trip to the other world easier.
Besides Egyptians optimism because of civilisation they acquired through the work of their creative hands, they domesticated some animals as early as 8000 BC. This happened in the practice of religious activities as animals were used to characterize certain events. For instance, presence of a specific animal or lack of it would have specific interpretations. The different interpretations would cover the difference between life and death, wealth or poverty, and peace or war to the entire nation. This symbolism of animals caused the ancient Egyptians to include them to maintain various religious themes. This is how some animals like cows started living in the same compound with men adding to their produce. Some artefacts like stone roofed subterranean chambers housed domesticated animals like cows slaughtered to appease Egyptian gods.
Egyptians had many reasons to smile about, which made them hopeful. The history of Egypt occurred in a series of stable kingdoms. After the Roman Empire, Egyptians adopted the Nile River valley project that hastened their civilisation. Farming produce from the fertile lands gave them money to spend in the country, and some to provide for other projects.