I add mom to my list of titles and roles because it is essential for anyone working with me to know that I am a mom. I can't always be on call because of this. Believe me when I say I try. My daughter has finally realized that my smart phone is her nemesis. I don't believe that kids who throw phones in toilets are acting without thought.
My precocious daughter was born in August 2003. She is in public school. She also plays soccer, takes gymnastics and likes attending meetings with me. She enjoys traveling with me all the time, so you are looking to invite me somewhere, if you invite her too, we're almost signed, sealed & delivered.
I also put mom in my list of roles because while our society talks a mean game of loving children (cue Whitney!), children are still a bit invisible. By claiming "mom" as a role, I make my daughter and my work mothering her visible to the world.
That said, my feminism is not rooted in my motherhood, rather my mothering is fueled by my feminism. Which was ignited by my late mother and maternal grandmother.