
Quoting
cdwjava
As someone who is related to cousins and nephews who are adopted (and a foster father a few times over, myself), I have discovered that these relatives have discovered that while the grass looked greener when they were "stuck" in their adoptive homes (by people who raised them since infancy) they soon discovered that their biological families were NOT what they had imagined. So, please keep in mind that you may have rose colored glasses for this family you may have never really known.
Also, if these grandparents had been capable, you could have been adopted by them when you were removed by child services once upon a time. For whatever reason, these relatives were either incapable or unwilling to take you in.
Be cautious.