Excluding physical pain, suffering can be felt as many things, existential suffering, boredom, emotional, etc. These aspects of suffering are not physical, at least - we do not accept them as physical as physical pain, which too is not as physical as matter, then we may say that any suffering is quite metaphysical, don't we?
"feel on your skin" is a figure of speech in Hebrew, i wonder how i missed that.. What I meant by that paragraph was that you may say that evolution (the process, the thing which that idea points at) brought us greed and anger, and you may otherwise say that evolution (the theory, the volume of knowledge and its' memes) had us to believe that greed and anger are a nature, as if it is a fact beyond and outside of the theory of evolution.
That doesn't depict an encounter with your nature, what say is "I hurt my self, I feel the pain, every time I did something forceful and indelicate in some measure to my skin, I saw blood and felt pain, thus, I may extend it to a Rule by which I shall live, this and that causes this and that".
Just because you see a pattern doesn't make you a genius, or connected to some universal nature of things, actually, if enough people see the conclusion of your pattern as wrong or unsettling, as empirical as it may be - you are suddenly the official nut-case.
I'm not playing dumb, I can see that your example has some (if not much) Truthiness. But that is exactly the point, you Want to understand the nature of things and you draw your lines of how you are going to do that, you use logic, a scientific approach, but you fail to see that to say something like that about the nature of pain you will have to monitor it constantly, because you cannot ascribe something like that to the future, although you believe the nature of things will always stay as is always was.
Thus, competition is a major one in our surroundings, yes.
A quick review of (inevitably) written history tells that competition has been since the dawn of man, yes.
But to declare it as a part of our nature is to say "I'm not going to change that because I believe it OUGHT to be that way".
"Direct and clear" as in "There's a smaller chance of error"?
I didn't say your examples of the origin of suffering are false, I said it isn't AUTOMATICALLY transformed to suffering. There is a process there, in which a person realizes he is better off in some other condition, other surroundings, other mindset, other way - He says NO to his condition, his fate, what have you.. And only then there is suffering.
One may suffer from pretty much everything, a walk the park while dreaming of sex, a trip to the forest while dreaming of the desert, a visit at the clinic while dreaming of a video game, dreaming of a better world, anything..
And here's the point - one may stop these sufferings if he only accepts instead of strives.
I think that what most eastern philosophy is trying to tell you is "What is is just what is, you may want to change it, you may want to logically reconstruct it, you may want to save it, but all of these are new things, different from the subject that IS, new things that take you away from the what is, into what is not, and there, as all things there, is missing - the way home."