I am reviewing as part of the Simply Positive Review team. I offer my opinion based on my limited experience. It is only one in a world of opinions and yours to use or ignore.
Overall Impression: Hi, and welcome to Writing.com. It looks as if you have come to the right place. This is an excellent first poem.
What I like:
I like the depth of emotion and insight in this poem.
"But all secrets do is simple
They exploit what mankind lacked" This is very thought provoking.
You have a quality in this poem of making it a sort of secret by never revealing what the secrets are: state secrets? personal secrets? secret formulas? While all through the poem there is clearly a shadowed mood, it is not until the end that you reveal just how painful all of this can be, no matter what secrets they are. Rhyme and meter can soften or emphasize the mood of a poem, depending on the language within. In this case, it emphasizes the discomfort attached to the secrets. The reader and speaker are pulled forward, not knowing what secrets are present or how they will impact their progress.
Problems and suggestions:
The content of this poem is fascinating. You could improve your rhyme and rhythm. (Now, understand, people say that to me all the time and I do get exasperated. It is your poem and you don't have to change a thing if it is how you want it. I assume you want feedback to make it better or you would not have posted it.)
The way to evaluate rhythm/meter is to mark strong and short accent lines above each syllable thus:
, , / , / , / ,
But all secrets do is simple
The dickens of the thing is arranging, replacing and rearranging words to make the rhythm the same in every line with the same number of beats while retaining meaning and using the meter to enhance understanding of the meaning, if you are writing formal rhymed poetry. When I get discouraged, I look at Henry Wadsworth Longfellow, who was writing by hand without our modern helps like a thesaurus on the computer and a rhyming dictionary. If he could do it that way, I should be able to do it with all this help. However, it is hard. So then, you get to choose, free verse or formal verse. Which will carry your message best. (Perhaps you know all of this. If so, please just ignore.) In this case, I am glad you chose formal form.
This is a great first poem. I assume there are many efforts before this and this in not the first poem you have written. It shows a capacity for thinking poetically.
Thank you for sharing.