Personally, I love feeding DD to sleep. Having said that, I don't do it (nor does she want it) every night. She is capable of going off on her own, but sometimes it's a relaxing routine that we both want and enjoy.

Elizabeth Pantley has a book "The no cry sleep solution" which describes many ways of helping babies go to sleep without using CIO methods. To break the 'b/feed to sleep' she describes her method called the "Pantley pulloff" (I think that's what it's called). It basically describes feeding baby to the point of drowsiness and gently pulling off and letting baby do the rest on his/her own.

If breastfeeding to sleep really doesn't work for you, it might be worth getting the book from your local library to see if this method (and/or any of her others) could be worth a try.