Has there ever been a situation where your instructor asked for your opinion and it didn't coincide at all with your instructor's? My instructor asks me for what I think about several different things relating Tae Kwon Do, and I don't think we agree on too much. I read about and see that people are so loyal to their instructor, that no matter what he/she may say, they will agree. Is it wrong to not want to blinded agree like I'm in some type of cult?
Here are my thoughts, in no particular order...
1) The disagreements must be only on minor matters. If you disagree with major principles of value, you have the wrong instructor, and you'll never be able to learn as much from them as someone with whom you share values. For instance, the third tenet of my style is that martial arts should develop the whole person, because the stress of life in general is much more dangerous (on average) than an unlikely attack. If a student walks in my door who doesn't want to hear about things like how to do better at work, how to decrease stress, etc., they need to find another instructor. Nothing against them, I'm just not the right instructor for them.
2) If you ever find yourself agreeing entirely, it's time to get a new instructor. You're not being inquisitive enough, and will start to think they're infallible. You don't necessarily need to lose the old instructor, but you need some new input to help you see their flaws.
3) I have a student who often questions things in front of other students ("Why wouldn't you just _____??"). He immediately apologizes and says he means no disrespect. I keep telling him I _want_ his questions, and that him questioning me shows that he respects my integrity and believes there's a good reason for my choices and what I teach. Every now and then, my lack of knowledge or a weak moment in my technique is embarrassing. Life is like that, and I accepted that when I became an instructor. I am not even afraid of someone being better than me - there are probably some of those here. As long as the student is questioning to learn, I encourage the questions. As soon as the questions start to get combative, it's time to talk.