Well, the point is, you’re not supposed to believe in anything until you experience it. Just because someone told you so, you are not supposed to believe it. Just because it’s written in your books, or because it’s widely accepted by society, or because you believe that a scientist has experimented it, or because your religious teacher told you so, or anything like that. We should only believe once we experiment it ourselves, by direct experience. If it’s something we cannot experience, then we should ask ourselves, “By believing this, does it lead to reduction or increase of lobha, dosa, moha?”. And if it leads to no decrease in lobha dosa or moha, then it is of no use to your practice as an upasaka or monk. This is from the Kalama Sutta.
So we don’t know whether the suttas are true. We don’t know whether what science and archeology say is true. Why, because we never experienced it. We are just blindly believing that someone else, or some group of people know what they are doing, and are telling us the truth. But truth is. We don’t know. We don’t know how old the earth is. How long people lived in the past, whether dinosaurs existed. Whether humans came from gods, or from monkeys. It’s all just useless clutter that isn’t related to the noble truths at all.
What does matter is… We can only experience sights, sounds, scents, tastes, bodily feelings and thoughts. Therefore, everything that we desire and hate, also revolves around those 6. Everything that causes us to suffer, and others to suffer, also revolve around those 6. Therefore, we have tanha, tatratatrabhinandini (We seek delight in sights, sounds, scents, tastes, bodily feelings, and thoughts), and this is the cause of all the wars, killings, rapes, murders, thefts, unfairness, greed, hatred, objectification, violence, which has plagued humanity ever since. So, any sane person would want to remove the desire for sights, sounds, scents, tastes, bodily feelings and thoughts, and that would be for the benefit of you, and all those around you. If you help others to at least reduce their tanha, then the world becomes a more beautiful place for everyone. When the desire is no longer there, the hatred also is no longer there. The mental pain, fear, anxiety, etc, is all gone. You will be able to lead a peaceful and satisfied life, no matter what life throws at you.
Then comes, how do you remove that desire? You must first recognize when the desire arises. For that you must watch your mind, feelings, bodily postures, etc (satipatthana), then through that, you must develop the 10 perceptions (anicca, dukkha, anatta, asubha, etc). Then you can train your mind to perceive different situations in different ways… so that you do not suffer, nor you do not cause any suffering to others.
For example. if you’re going on a bus, and someone throws a bucket of excrement on your head… you want to bring the perception of earth element… that this is just earth element. By doing so… your mind won’t become angry or disgusted. So it prevents the situation from escalating further. Its beneficial to you, and the other person. If you don’t develop that perception, or perception of impermanence, or non-self, then you will get angry, kill the guy, and go to jail for life. In this situation, the asubha sanna (perception of unattractiveness) comes automatically, so you must train your mind to bring a different perception in this situation.
If you see a hot girl, you automatically get the subha sanna (perception of beauty). therefore, you have to bring the asubha sanna (perception of unattractiveness) in this situation. So that your mind is not wandering and craving and seeking to scratch a never-ending itch.