I see reading as a hobby – an enjoyment. So my rating system reflects that.
I go with my gut on what rating to give. It strictly reflects my enjoyment of the book.
1 – I did not like the book and I probably DNF’d the book.
3 – I liked the book but I don’t plan on re-reading it.
5 – I loved the book and plan on re-reading it.
(this is out of 5)
As you see, I don’t both with 2 or 4 ratings. I keep it plain and simple.