I night-weaned my (now school aged) boys around a year. They did cry some but it wasn't CIO. My husband was comforting them, or I was. I don't see any way to raise a decent person without sometimes refusing to give in to their desires. They also cried occasionally when they wanted a food they couldn't have, a toy at the store, even a diaper change. I just don't see this as either spoil them rotten or make them CIO. There's soooo much in between!
Sleep is important to me. I came onto this board today, for the first time in years, to try and find some ideas of how to get my 4 mo. old to wake less, and she only wakes 2-3 times a night for ~10 minutes. But I have 3 kids, and in order to meet all of our needs I need to fit as much sleep as possible in the hours of 11pm-7am. It's a process where the baby's needs come first at the beginning and eventually, the baby can fit into the family life.
99% of the time, a 1 yr. old doesn't need to nurse at night. They will probably want to and if that works for mom, great! But there is nothing wrong with nightweaning as gently as possible. FWIW, my oldest coslept and nursed until 5, after nightweaning at 1.