In other words, the cycle of birth and death is painful, dangerous, and boring.
It is painful, because all that come together will come apart, all that is gathered will be scattered, all that is built will be destroyed, and all that are born will surely die.
It is dangerous, because all desires inevitably lead to suffering: most often, we do not get what we want; at other times, we do get what we want, but it is not what we expected; and, although rarely, sometimes we get what we want, it is just what we expected, and then we inevitably lose it… Furthermore, even that which ordinarily supports life ―such as food, drink, and shelter― can become a cause of death. It is boring, because we are doomed to repeat cycles within cycles, mistake after mistake, pain after pain: work and rest; earn and spend; hunger and satiation; love and hate; pleasure and pain; gain and loss; praise and censure; fame and dishonor ―in short: birth, disease, old age, and death.
We need not despair. There is an end to suffering, and the Noble Eightfold Path leads to the cessation of suffering.