Here's why:
* Obsessed with fur: Her desire for a fur coat made of dalmatian puppies is cruel and shows a complete disregard for animal welfare.
* Manipulative and ruthless: She's willing to kidnap and harm the puppies to achieve her goal.
* Lack of empathy: She shows no remorse or sympathy for the animals she wants to harm.
* Dangerous and unpredictable: Her actions are impulsive and dangerous, putting others at risk.
While she might have some entertaining moments, her actions and motivations are ultimately villainous and harmful.
It's important to remember that Cruella de Vil is a fictional character, and her actions are not intended to be condoned or imitated in real life.