Like any healthy human, longing for connection with those we have an attachment to, is normal. When you need clothes, help(signing up for school, getting better by having parents make an appointment at the doctor and getting you there as well as your medicine, learner's permit, getting to friend's houses, getting to and from activities, etc)with life, your parents meet your needs. So, in seeing how they do that, they have a need....a need to feel that connection with you and that they matter to you. Sure, you can stay isolated in your room&that is part of learning who you are and what you like, yet a simple how's your day, Mom? Or even leaving a little card or note saying how you appreciate them by making breakfast on a Sunday for them(nice gesture you can do THIS WEEKEND), then go back to your room. Do little things like help out with carrying in groceries or offering to help. Parents are not magical...they are human, they have feelings& they get hurt when they feel used or unwanted.