In a way, though, I already did tell you. It's mentioned in the Poetry rule thread that's stickied at the top of the forum. Reading through the rules of that section before posting would have saved your post from being deleted because you would have known and followed them.
Because you didn't point out specifically what you liked about the poem. A constructive review would have mentioned something in particular you liked about any one of SeekerOfDarkness's poems. You didn't say anything about any poem in particular, which doesn't fit in with the rules of the Poetry section. That's why your post was deleted.