Do you feel like a bad person if you lose respect for them? If you feel guilty, perhaps you should write down the things that bother you about them and discuss some of these things with them. There is no one in the world who should support your decisions and goals more than your parents. Perhaps you may find closure in understanding why the things they do, which seem wrong to you, may seem right to them. If there is violence involved, perhaps you should find professional guidance. I am not going to pry into what you do not provide for information because that is your prerogative. Should you choose to add more details, then it may help people here, including myself, find a solution or at least point you in some direction leading to understanding. Remember, what frustrates a person is usually related to expectations not being met. When expectations are challenged, frustration is usually the first emotion that is triggered.