Most people ignore most poetry because most poetry ignores most people.
Immature poets imitate; mature poets steal; bad poets deface what they take, and good poets make it into something better, or at least something different. The good poet welds his theft into a whole of feeling which is unique, utterly different from that from which it was torn; the bad poet throws it into something which has no cohesion. A good poet will usually borrow from authors remote in time, or alien in language, or diverse in interest.
I used to find that I was never sure I was going to finish a poem until I had thought of the last line … usually the last line would come when I’d done about two-thirds of the poem, and then it was just a matter of closing the gap.