When I private messaged you yesterday I mentioned that I am not used to posting on forums. When it comes to writing I'm used to writing legal documents and things to do with my job as a lawyer so perhaps that's why my tone comes across as 'authoritative'.
It was not my intention to sound 'authoritative' and the way that I write is different from the way that I speak. I do a lot of reading (cases, judgements, legal documents, etc) which influences my writing. However, I grew up in the inner city and when I speak people can tell.