The genre is too broad to paint with a single stroke. Much of what's out there are cell phone pix of naked chix and are, frankly, aesthetically crap. The problem with many photographers who want to do nudes is that they represent themselves as "photographers" but they're really just a GWC who has little or no photography experience who looking to see some chick naked. "Creepy" and "sleazy" are two adjectives I've heard from time to time about other "photographers" who want to shoot nudes. I do everything professionally possible to stay as far away from "creepy" and "sleazy" as those terms can kill a photographer's reputation in this internet-connected world. Unfortunately, good photographers are often seen in the light of those guys until we prove ourselves otherwise. They make it tough for everyone.
There are good points made in this thread about what the purpose of the photo session is. It is important to me to have a shooting plan for a session that I can articulate to the model before hand. The model knows exactly what I'm after that way, and I typically don't get distracted by trying to figure out what to shoot next. I have releases ready before shooting, and I always advise the model what the current intended use will be for the images. My model releases are unlimited-use though, but I generally try to recontact the model as a courtesy if I have a secondary use or market for the images just so they know where their image is being used "out there."
When I have the images I had planned, the session is over. I have the studio set up for that plan when the model arrives. It's all about the business of making "THE" image. I have shot nudes successfully and still enjoy doing it from time to time. Shooting aesthetically pleasing nudes is a difficult genre and it is a serious pursuit to undertake. To do it well takes an exhaustive study of lighting and posing. Every human body has aesthetic strengths and weaknesses, and lighting and posing to highlight the strengths while minimizing the weaknesses while still maintaining the context of the image concept can be daunting.
I always have a studio assistant with me when shooting nudes, and my wife fills that role when she can. She has modeled for me in the past and I have some images from those sessions that are remarkable. I have a couple of ideas I'm currently working on making into images.
If you approach shooting nudes in a professional and businesslike manner, it can be quite rewarding. Approaching it any other way can lead to a host of unresolvable problems, both personal and professional.