The notion that going against your parents' wishes or disagreeing with them is betrayal seems absurd to me. Unquestionably there is an age where one is fully dependant on their intellect and wisdom for guidance, but eventually one reaches a threshold where independant decision making makes a clear assertion. While my parents have raised me to uphold the principles and beliefs they hold most important, they have never expected me to be a carbon copy of their personas. Eventually, they knew, I would reach a point where my personality would develop facets alien to theirs. This means I do sometimes disagree with them, and I do feel, on occasion, that their advice is imperfect. What I have faith in, though, is their good intention. I understand that whatever I hear from them is an attempt to make my life easier or better. This results in disagreements of the most passive kind; while we might not see eye to eye on some subjects, we respect each others opinions and intentions.
I have no plans of carrying out every single one of my parents wishes to the fullest, nor do they expect me to. They will continue to guide me, and they expect me to exercise my intellect and my personal experince to make the final calls.
In college, though, I feel your primary responsibility is both to yourself and to your parents, in that you must study sufficiently to graduate and set yourself up for a financially stable future.