I agree with @thoroughlygood on the aspect of apologizing for your opinion. I have always had a natural tendency to start off with a disclaimer about how I am not the most knowledgeable about something or maybe not entirely in the right, when I start to write an article. I wrongly thought this would put the readers at ease and keep me self aware to some extent. I now realize this only serves to undermine the conviction in whatever I am trying to convey. I urge you to refrain from saying sorry for your words or opinions, especially as a conclusion to your piece.