First, I would never refer to myself as a goth, there are plenty of them at my school and I am in no way connected. I am not writing about how life sucks or how everything is empty and worthless, my last one was supposed to be hopeful and encouraging. Second, who is to say that being older makes you any better of a writer? Sure, experience does help you to improve, but just because you are older doesnt mean you have more experience writing. Even if you did, you had to acquire that experience somewhere, and the best way to improve is to show other people what you write. So are you setting an age restriction? Are you going to card me like I was walking into a bar?  Also, as you get older, most people become less creative, thereby their creative writing degenerates.  Third of all, you are no more qualified to judge what is and isnt poetry than anyone else. You can have your opinion, but don't be so arrogant as to consider that yours is the most valid. Even assuming that you were right to criticize our "writing", since it can't be considered poetry, having someone rip on your writing that bad sucks. Especially if you are sensitive about what you are writing about, which a lot of people are with poetry. Personally, I don't care about my stuff, you can have at it, but I think that that is very low to cut off the others like that. If you want to criticize, be a little more constructive about it.
