Life is all good and bad and in between- (still good?) ..and then you die (still good?)...and get reborn again (still good?) ..and again (still good) ..and again and again (still good) ..a hundred million times doing the same stuff all over again (still good?)
That is why it is unsatisfactory
To have a need to stop this cycle you accept an important part of Right view (the 'forerunner' of the path factors) - Rebirth.
Without right view there will always be questions. For anyone who doesnt accept that Life Sux, the practice will be without the heartwood. Suttas say that it is suffering which leads to the search and faith in Buddha-dhamma. This is not to say that everyone must start there, but they certainly must go past that point at some point.
The Buddha said that evevry moment that arises is Dukhha
. Now that is not an opinion but a statement which arises from understanding deeply the true nature of phenomena. Everyone who sees it, agrees with it. Those who havent seen it through insight practice wont agree with it. It doesnt make those who have seen it sad, it makes them wise. It is also the first step in finding a way out of it.
Mental suffering falls away when a person becomes an arahanth (sopadisesa nibbana- nibbana with residue remaining)
Everything that is unsatisfactory falls away when the aggregates dissolve at death (anupadisesa nibbana- nibbana with no residue/'pari'- nibbana- full nibbana). The fact there is this distinction should be a clue that endless rounds of samsara without suffering is not an option in the buddhist path (which is what most buddhists actually want due to clinging)).
Without entirely letting go of samsara as unsatisfactory (not having aversion towards it, but simply dropping away from it as it is empty of anything worthwhile clinging to in a neutral mind state) there is no escape from the field of perception ('the world') into nibbana.
I'm not being a stick in the mud here.
There is great happiness in being able to access states of letting go of the world.
It is a drastic measure - but you will see that it is the only permanent option. This dhamma is for the wise ..and I might add, the strong.
Don't even try to explain it to others. It's tough enough doing it for buddhist practitioners.