Dukkha is both pain and suffering and also the
general unsatisfactoriness of conditioned existence.
A fundamental reason why existence is unsatisfactory is because
it is connected with pain, subject to suffering. The pain and suffering
to a great extent are rooted in impermanence.
We crave for a world where everything that we value
and love will remain forever, but when meet the inevitable
changes we undergo suffering. The five aggregates themselves
are impermanent. We would like to preserve them, to dominate
them with our will but when they escape our grasp we meet with