Parents: fight fair or fly off

Ok. So we have all been there. The situation where you are asking your parents for something, inexpensive, or to be allowed to do something that will have no affect in the long run. They reply with your request: "Because I said so!" "Because I don't need to justify myself to you!" or something of the like. Anyone else see the complete hypocricy in this? Or lets say that you and your parents are arguing about something, with some voices being raised. You try to say something after they have been silent for over 5 seconds, and they yell "DO NOT INTERRUPT ME". Ok, fine. You let them finish their rant then after around 10 seconds of waiting, you begin to speak. You are getting halfway through your point that is going to completely kill their case. What do they do? Interrupt you, of course! You start yelling because they interrupted you. What is their answer? "I can interrupt you because I am your parent and sometimes I have to say something." How can one deal with this without getting steamrolled and or grounded? You cant. Why? Because society today has it set up today that parents are allowed to be hypocrites whenever they please, and children can do nothing about it! Is it just me, or does anyone see the idiocy here? You do not tell someone that 1+1=2 and then when they put that on a test you mark them off, saying it is 3. You should not be allowed to do that! Parents can simply say "Because I am your parent!" and that is it. That is not only the lamest excuse ever, but also it is the most illegitimate reason ever. Why should kids have to respect someone who does not respect them? It is the golden rule for Pete's sake!