I really think it depends on the person. Some people avoid healthy dependency because they have been taught any type of dependency is bad. That forces them to never rely on anyone and to live their lives alone. We are social creatures, and we cannot and should not live alone. That's emotional murder. This correlates with an "avoidant attachment" problem.

On the other hand, some people don't know how to function without other people, and are too dependent. These people can't exist without someone else taking care of them or protecting them or encouraging them. They can't form their own opinions or their own lives. This correlates with a "preoccupied attachment" problem.

And then you have the person who is both at once. In some ways, they feel like they can't survive or exist without others being there all the time, yet they are terrified to reach out or try to find some sort of connection. I would say this correlates with a "disorganized attachment" problem.