Ruled by Feelings
Some women are emotional and are dominated by their feelings. Once such behaviour is triggered, then their judgment levels become completely clouded. Feelings overtake rationality in some instances and they lose control, termed as 'impulse control disorder'.
Good side of them
It may nice to see somebody who breaks the rules and breaks the mould. These guys again may not be bad by nature; they also have some good qualities. There are many bad boys who also have certain loveable attributes about them.
Some women are fascinated by the thrill of unpredictability and excitement. This motivates them to choose an ideal boyfriend material, but not any husband material.
Spume bad boys resemble popular 'heroes', seen as larger-than-life, even if they're not with a what if I slip up once in a while' attitude!
Be it the sympathy of an underdog, the thrill of dating a larger-than-life hero, well some girls prefer bad boys to live life in fast mode than take a lonely lane.