Hello Teachers/Friends,
Again my heartfelt thanks to all your kind great help. As I explained before, I usually don't reply individually just to say "thanks" or "good post" unless I have something to say, because I'd like every post of mine not to waste your valuable time.
I just listened to Ajaan Chah's Dhamma talk "the Natural Mind", which makes me ponder about the real meaning of nibbida. I just realized that I've misunderstood "nibbida" as 'revulsion' (intense aversion, which transforms into a strong desire to 'escape' from samsara). As long as we have 'revulsion', we are actually still strongly attached to the things causing us suffering and we are craving to be away from them, such clinging and craving is itself a cause of suffering.
But the "nibbida" the Buddha was talking about is more like disenchantment with no attachment -- neither attraction nor aversion, which arises from the real understanding of "anicca" -- seeing both the pleasant feelings and unpleasant feelings are not lasting so neither are worthy of clinging. If "anicca" is truly understood, then there should be no "revulsion" or "craving for escaping".
The right understanding of "nibbida" can bring us a deep sense of detachment from the five aggregates and the six objects. Whether or not things accord with our likes or dislikes, it doesn't matter to us anymore, since we no longer identify with them or cling to them and we don't give them a reason to cause us suffering. It's this clinging to liking/disliking, not the things themselves (not things being destroyed around us moment by moment), the cause of our suffering, and "whatever causes suffering is itself Dukkha".
With metta,
Starter

