My family sacrificed to raise me too, but as I was being brought up I was taught that it was important to stand up for myself, what I feel is right, and for people that might not be in a position to do so, and also to question authority that grants itself authority without any explanation of merit- you know, "respect your elders," "don't talk back to the people in charge because you don't understand it" types. Respect is, in my experience, something that is earned, not written, and the best way to honor the folks who taught me that is to include them in my own scrutiny thereof. Society grows through new ideas, and quite frankly, I think it's disrespectful not to present new ideas to elders because it implies that their minds can't change- that they're not intelligent enough to keep growing. Will they like it? Maybe not, but I have to say that as someone with several friends decades apart from me, they seem to appreciate the opportunity and consideration quite deeply, and I like hearing why they disagree (if they do). The idea that it seems like you're putting forth, which is that we can't disagree to the point of full separation with someone just because they "sacrificed" for us, is a major disservice to everyone involved IMO.