I think "nor" was fine. Or maybe "or" would be better? OH GOD, NOW I'M ALL CONFUSED.
My opinion of your essay:
heart heart heart
Your obviously superior skill with words has made me ashamed to even attempt to explain the admiration I now have for you.
There are one or two things that could be improved on, though.
While, without succumbing to the wiles of self-enhancement and vanity, a brief explanation of my superiority over the dividualistic majority that populates this corner of the internet [you] seems impossible; here I am, ready and willing.
The semi-colon should be a comma. You may also want to change "here I am, ready and willing" to something less cliched, although it isn't necessary.
And while many possess such admirable traits, few have the capacity for fulfilling their aspirations.
I'm thinking "aspirations" is not quite the right word. "Potential" makes more sense. I would say "to fulfill" instead of "for fulfilling", but that could just be me.
As such, when it comes time for me to defend said ideals, I will inevitably appear wiser and more convincing than any hotheaded adversary.
I'm pretty sure that "said" is not actually a grammatically correct way to refer to something previously stated. Probably no one will question it, though.
I dream, therefore I'm greater.
There was so much awesomeness, and then... this. It's completely random and has a contraction in it. Horrors. If you do anything, get rid of this last sentence! It does no justice to your might and glory!