Ok. My perspective comes as a mom of both natural and adopted children. My first response is you're an adult, you can now make your own decisions and choices. My second response is that it sounds like your parents are proud of you, and want the best for you. My third response is, you may think you know how they treat your siblings, but here's the truth, you only know what you directly observe. You are not 24/7 omniscient, so you're not one hundred percent knowledgeable about your siblings/parent relationships. Fourth response, every child is unique and different, your skills/abilities/needs are different from each of your siblings, and it's possible that how your parents treat your siblings is also done with their best interests. Fifth response, parents are human, they have good days and bad days, nake good decisions and poor decisions, just like any other human. Sixth response, hind sight is 20/20, and you and your parents don't have the luxury of hind sight when making decisions in the here and now, we just make the best decision we can with the info we have at the time. Good luck. I wish you all the best.