What is your view on adoption from the childs perspective?

I am adopted but wasnt particularly treated brilliantly – I wasnt abused or anything just a bit neglected ie, my parents had a party to go to when I was 8 and this was on boxing day so they left me in the village park in the morning and I remember sitting on a swing feeling very embarassed because I new my school friends would be around later and think it was a bit strange…..I love my parents but have been told all sorts of things by them, ie, my father told me when I was 16 that he felt I split the family up (I have an older brother who isnt adopted) and that I was lucky to be here etc…...I dont know really how to deal with all this…..any suggestions??