um...I'll admit that it is hard for me to relate to the conflict here because as much as I loved co-sleeping with my infant daughter my first goal was to get her to sleep through the night so that all of us could start getting on a normal sleep schedule.
It may seem normal to some people to nurse a child all through the night, but it is NOT necessary. AND I would argue that in the end the longer you nurse through the night the harder it will be to establish normal eating habits.
Sleep is a very important part of being human, your body uses sleep to cleanse the body of toxins, to renew cells and repair damaged cells and rest the brain. Although most people can survive on a continuously interrupted sleep schedule no doctor would recommend continuing that pattern if it is fixable. So for the sleep factor alone, for everyone I would encourage you to respect your husband who obviously loves and cares for you and your child to allow something that has bothered him for 12 months to continue for so long. It is never easy when a child comes into the marriage, we as women, often feel like we are put in situations where we have to sacrifice our husband's happiness or our motherly wishes for our children. It sucks, believe me I have been there so many times! Talk to him, tell him why you are hurt, or frightened ask him to help you transition your daughter. You don't have to make your daughter cry it out, in fact with as much as she nurses, she'll be up half the night screaming. I would say to develop a plan with your husband, the first time your daughter wakes send Daddy, he can comfort or rock her, giver her a pacifier, whatever, but he obviously can't nurse. The next time she wakes you go to her and nurse-repeat. Eventually try to get to the point where you only nurse once and then not at all.
Any time you change a child's habits it is hard, be a team with your husband, make it a goal you can both work toward and he will feel blessed to be included and proud to help you and your child. Just remember you aren't choosing between your husband and your child, you already planned on doing what your husband asks, you are just honoring his wishes a little earlier than you had hoped.
But there is a reason why most of us have all encouraged you to respect your husband's wishes, without a solid marriage and acting like a team when making parenting decisions, you'll set a pattern of discontent that WILL be detrimental to your child.
There may be many times that you will need to stick to your guns, but when it is something that inevitably will happen anyway just work with your husband.