He Made Me Hate Poetry

I took a class last semester creative writing 101 the teacher challenged everything that I had ever thought about poetry he said " No thinking outside the box" He was full of rules and control I'd always though poetry had no boundries and that it was at it's greatest the first time the author jotted it down on paper. He was all about revisions. But How do you revise a poem? Doesn't that just erase the point you were trying to get across when you first wrote it? He told me sayin things like love, pain, death, sadness was too abtract so he challenged me to go without using those words. I'll admit my descriptions got better but it took all the fun out of everything. I wasn't in the business of writing poems to make it into something perfect. Poetry was something that I used to release. Grammatically correct or not it helped me to gain some inner peace. So ultimately in that class I didn't do well. In that class I rebelled the entire time. His definition of poetry were so completely different from mines. I want to know if your a real poet or even a real professor if you fail to inspire?