"when you say 'lens' what are you referring to? and what is this lens distorted and clouded with, or should i say how did it get clouded, or was it at one time not clouded?
the shapes and shadows part of this made me think of plato's cave. (?)"
We are actually being our true nature all the time, but our realization of that is clouded by our thoughts, emotions and concepts, like dust on a mirror. Our lens is our personal interpretation of that clouded mirror. Yes, Plato's Cave is a good analogy.
"i feel it's necessary as humans to see things both negatively and positively (black and white if you prefer). how can we know goodness without it's opposite?"
Yes, while people are unenlightened, it is a helpful expedient to have moral codes and adjudge things to be either good or bad, just like children have to be told to wash their hands. But, your essential nature is like the sun rising in the void - it is neither good nor bad, though what flows from it (love, mercy and compassion), we would generally adjudge to be good.
"how is it that attachment leads always to suffering? this is do not agree with. suffering is subjective in any case.
you mentioned that we are on this path to find our true nature. i am on my path to find my true purpose, my nature is evident to me."
By being attached to something, you will feel the need to protect it which will produce anxiety if something appears to threaten it, for example, my words challenging others' tightly held beliefs. Whatever it is you are attached to will not bring you fulfillment and you will ultimately lose it, which will cause further anxiety and suffering.
By being attached to something, you are imagining there is something outside of your true self which you need to have.
If your true nature is evident to you, why would you consider that there exists a true purpose 'out there' for you to seek?
There is no Holy Grail to find. You already are the Holy Grail.