I was adopted and I am in much the same situation as you, Dance. I was very detached from my adoptive parents and we never ever clicked. In the end, they started stealing my stuff and such and I got kicked out because I caught them stealing my stuff..
If you have any questions, PM me anytime, I'm always happy to help
I believe that yes, adoption can affect the way a child grows up, but it doesn't have to stay that way, many adopted children can be better psychiatrists, social workers and such, because some have a lot more experience in life than others.
I hope this helps some