Why the Egyptians were so preoccupied with continuity and permanence?

It's kind of interesting to look at why the Egyptians were so obsessed with permanence and continuity. I could see how their religion had a big impact on it. As hardcore as their religion of polytheism was, it's possible to think things were sot of drilled into them from day one. I also think it could have something to do with their ancestors being nomads of a sort and maybe they just wanted to ensure they didn't return to that lifestyle. Even in their art it almost seems as though they are just hammering in the whole thing. Even a lot of the gods they worshipped were permanant. Everything around them was to some point or another was a constant in their lives. Take the Nile River for example. Here they were in this desert region surrounded by the vast emptiness of the world around them. Then every so often like clock work the river floods and brings with it the richest soil anyone had ever seen. Then they settle into little towns and stuff, governments form and along comes a very persise and structured religion. Maybe the consistancy around them all the time lead them to believe that things were always going to be that way. It's highly possible that they began building things like pyramids and temples was because they simply wanted to make their life better. Being pleasing in their god's eyes was a good way to do this. I'm not really sure why they were so obsessed with permanancy and continuity, but a good bet would be because of their religion. I'm sure there are other reasons, but it seems like the reason they were like that was more or less based on their love and dedication to their religion. They went to great lengths to ensure it would be around for many years to come.