I'd consider myself a homemaker.
I worked full time until 4 weeks before giving birth, and I hope to never go back! I loved my job, but I feel that being home, and able to invest my time into my husband, my house and my child is my true calling. By house I don't just mean cleaning and cooking, but also entertaining, visiting others, making it a place people want to be, a place of peace and rest, a place of learning and exploration, a place where ideas and thoughts can be aired and discussed.
I guess I consider the SAHP title to have more to do with focusing one's energy mainly on the child/children, rather than on the whole family relationship.
Don't get me wrong, focusing on the child is very important, but that's not what I personally spend my days doing. I don't think it's my job to make sure he's entertained/happy 24/7, but rather to direct him and give him loving attention and guidance in the midst of doing life (but the manifestation of this is in constant flux).