To cease to exist, the existence itself

hey,
in reality,
there are times when you cant come up
with the right answer..
thing that you cant do anything about.
not all people can become happy.
why?
because happiness corrupts people.
we adapt to the happiness we obtain once,
and pursue even greater happiness.
we are greedy, weren't we?
thats why people are able to feel pain as well.
if people doesn't feel sad, they will never know
what happiness is,
how heaven the feeling is