I think that there is some correlation between the attachment relationships a child may have and their well being later in life, but ultimately, well-being greatly depends on the environment we are brought up in. Our experiences as children greatly shape how we turn out later, and I don't think that attachment is the only factor, even though it does have some influence.
I agree. I feel like attachment is a argument of Nature vs. Nurture. One aspect is what your environment is like and how the child responds to it, but another aspect is what the child's genetic makeup is and what their genetic code might be influencing them to be.
Yes, I agree to both people above me. As I said in my own post, environment is incredibly important to the developement of a child. It is a very important aspect of defining who the child grows up to be and how they end up presenting themselves to the world externally and to themselves internally.