Back in July, Alan Cooper wrote a tweet about quitting your job if your manager doesn't understand UX (I am simplifying). He got a lot of flak about that.
But there is something to think about there... As a person who is very principled, in my first job, I stuck it out. For three years. I believed that a company would be loyal to its employees if the employees were loyal to them. However, that turned out to not be true. Never ascribe human attributes to a company.
If the work you are doing is not recognized as valuable, try to persuade your colleagues, but keep your eyes open. Set a time limit for how long you will stick it out before you leave. Don't stick it out because of principles. Companies don't have the same principles.