Capitalization goes hand-in-hand with punctuation. A period is only part of the formula that tells a reader that a complete thought is done. Capitalizing the next letter is a signal that the next complete thought is starting. The reader doesn't have to continually guess whether the punctuation was incorrectly or accidentally placed.
I pushed through your style choice and read the article because what you had to say was interesting and important. But not all readers are going to grant you the same courtesy. If you really want the widest distribution possible do your readers a favor and capitalize things according to the rules.
You used paragraphs and correct spelling, as well as avoiding things like run-on sentences and sentence fragments. It's obvious you want people to your read your work. Whatever reasons you have for choosing to not use capitalization, those reasons are not as important as the message you are trying to spread.