Life is a circle

I was reading a book of the Jaina traditions in which i found a very interesting classification about the life cycles and I think the writer has taken a good take in defining the circle of life.

As per the Jaina pantheon, we have six cycles which include
1) Suhusma-Suhusma--During this period happiness and bliss prevailed on earth and life was like heaven on earth.

2)Suhusma--From bliss life cam to a more earthly plane. Human beings were happy but minus the supreme bliss.

3)Suhusma-duhusma--Happiness prevailed but dukkha(sorrow) also made its appearance on the earth. Man become more materialistic and had less control on emotions.

4) Duhusma-Suhusma-Sorrows become more overwhelming than
happiness. Life become mean, cheating, lies and untruth became powerful.

5) Duhusma--The present age sorrow are supreme, desire is overpowering and there is no salvation. Some times happiness gives aglimpse.

6) Duhusma-Duhsma--Incest, killing, rapine and murder rock the world. It will start after 10000 years. The world will come to end.