it's not a defence. nor do you sound interested but quite judgemental tbh.
SM's point about goddessing is good, some people overly embrace aspects of their live and make them more than they are.
Until I recently agreed to take a step back to give dh the freedom to travel more and go forward with his career (hugely benefiting our family as a whole in the long term) I had a job / profession I very much enjoyed. For me it was always just a job, for another of my colleagues at the same level it was very much a career that she was hugely proud of. Her personality was hugely defined by her job.
I imagine you know the type of people in the workplace I mean? Neither of us were better or the worse at our role for it except I was paid more because I was frankly awesome 
Some Mothers are like that too. Some happen to be a Mum as part of who they are. For some people who they are is a mum.
That's why I think your op is a daft question.
If I am asked what do I do I say SAHP. I've actually used the opportunity to slowly build up a business at home. As well as effectively being the wrap around childcare that allows dh more freedom in his work. But I don't tell people about it as it'll happen over a time frame that works for us.
I have no more or less value than anyone else on this board. I don't feel cowed by the WOHM supporters nor do I feel intimidated by the SAHP supporters. My children are happy, cared for and have respect for both of us. Just like most others dc's feel for their parents.
Does that help your interest?