Is this whole thing about people thinking black widow calling herself a monster because she’s infertile? Did they miss the part where she was trained to no care for life? The part where she was trained to kill without the blink of an eye? the part where she was to become an emotionless killing machine? The reason she sees herself as a monster is because she’s killed more people than hulk probably has. It has nothing to do with her being infertile, but her being infertile makes it hard to have a family.