I think it's safe to assume that most nursing students expect, at the least, to be respected and valued. I'm sure they also expect to work in a supportive, SAFE environment. I also don't think these are unreasonable expectations. Unfortunately, they are, in alot of hospitals, unrealistic.
This is the reason why I have chosen never to do bedside nursing and I don't regret it. Unfortunately the amount of nurses taking the crap far outweigh the ones who don't and as long as that is the case, we are fighting a losing battle at the bedside. As far as being respected, you absolutely have to demand respect. In the face of an ego-inflated MD, know-it-all nurse, demanding family member, or whomever else feels that they can treat you like crap. You may catch slack for standing up for yourself but once you've established that you won't be licking anyones shoe soles you'll be ok.
Please don't regret going into nursing. There are too many options for you to feel you have wasted all that time. Please do just a little research, there are many jobs out there that you will enjoy, feel valued, and get paid well to do. I have found mine and it didn't take long at all. Good luck.