As we discuss in the "Speaker" section, the speaker is most likely someone who knows and thinks a lot about poetry. This doesn't mean, though, that she embraces poetry wholeheartedly. She knows that poems can have their problems and that they are not always fun to read. The speaker poses the question: Is poetry worth all this trouble?
The tone of the poem indicates that the speaker actually takes great pleasure in disliking poetry.
The speaker probably never really disliked poetry; the poem's first line is a red herring.