I can only utter the same sentiments that have been said before. Bill you are an excellent writer and don't leave writing just because of some fools.
In my opinion, if criticism isnt constructive then whats the point in being totally negative? I understand if it is an editor saying it to a writer but otherwise its no go area.
I can also repeat what Bill said. We are not professionals; not many authors on the site make money from what they write. They do it for the passion and intensity that writing can bring. If you scathe them, then they lose the passion and they stop writing all together and that is something NO writer should ever have to face. For example, in a book i'm reading at the moment (about publishing books), this lady had an eye condition but she still produced over a million words in one year. Its amazing how some people get through their issues.
My only request is think before you post a review Will it offend the author? Or will it help them? Help is always the best option
We are a community of writers here to help and be there for each other.
Hope i didn't ramble...