I think it's ok for folks to like different series but I have never seen anything like the hate "Enterprise" gets.
I took me a couple of watchings through to like Enterprise, and I still rank it far behind DS9 and TNG. When it first came out I hated it. I felt cheated... the series was taking me back in time when I felt they should be going forward in time. In the end T'Pol and Trip saved it for me. I think of the show as their story.