Convincing arguments are almost always subjective when it comes to ctb. In my experience, they'll never fully understand how I feel, and I don't see any of them as hostile in anyway. They're doing what they think is right, and I appreciate they care. However, it is my body, and people can only understand the concept so far (ie abortion, legalized drugs, etc.) before they start to blame themselves for not being able to save a life.
I really do appreciate some pro life arguments when it's spoken with care and passion. Some times it can be enlightening.