hey eou, I don't think people are trying to be mean...it's just that we don't want you to get your hopes up for nothing. From looking at the posts you've made so far, we can tell that you've gotten a lot of new plants lately. Cephs and Helis are incredibly cool plants, but they're also pretty tough to grow, as well as relatively hard to come across.
My advice is to concentrate on the new plants you've gotten recently, and learn to grow them really well. I think once you've shown that you're a good grower, folks will be more likely to share things like Cephs and Helis with you because they'll know that the plants are going to a good home.