Reading this almost brings me to tears. Right now, at 27 years old (same as you), I am working on my prereqs for nursing. And the more stories I hear like this, I seriously get teary-eyed. I can't bear to hear the disgusting things that people say, or how awful you are treated. It scares me so much, and I have been looking into med school for this very reason. It's such a shame, because before coming onto this forum, I thought that we had reached a time in history when nurses are respected, paid well, given great benefits (union?), etc. But the more posts I read like this, I start to question my decision that I was once SO excited about.
I agree with the other postings though, that you should look to the ER or OR. Many OR nurses particularly, seem so happy. You deserve more, so much more, and don't stop until you get it.