Human Life: A Cycle?

In nature, things happen in cycles. The weather turns hot in summer then turns cold during summer as the seasons revolve in cycles. The tides rise and then falls. The sun rises and then fall. Everything in natures works in a cycle. Is this the true for human life? I think in some aspect it’s similar to the cycles of nature. When we are born, we are naïve and barely able to walk. As we age, we begin to walk, talk and fill our mind with information and intelligence. However, as we approach 60s or 70s, our body begins to degenerate that we tends to get Alzheimer and forget things. Also, our physical body becomes weak and vulnerable to diseases that we can’t walk or talk properly. In this way, our human body works in a cycle just like a cycle of nature. However, in a spiritual way, our human life may never be in a cycle. As we grow and age, we experience many different things and intake many variety of information and memories. If we never obtain Alzheimer, no one will be able to take those memories away from us that it will never follow a cycle where we will be memory-less like when we are kids. As we leave this world, our spiritual body continues to exist even though our physical body may have disappeared. If one such believe in resurrection, then our spiritual bodies never walk in a cycle and keep moving on just in a different physical body.