In my previous post I wrote a few words about motivation and motivating oneself in a job that has started to seem like something one doesn't want to do. I also wrote that one of the options in a situation like this is to try to change one's current environment. However, the best way to stay happy is to avoid jobs like this for good.
Obviously this is easier said than done, but you must remember that your responsibility to yourself should weigh more than your responsibility to others. What I'm trying to say is that you should always keep in mind that it's your own life you are living. Sometimes it's good to listen to other people's advice, but not always. There's also a difference between what seems to be (or became) useful to learn and what seems like fun and interesting to learn.
Life isn't always fun. Sometimes you should look really far to understand which option you should choose now. However, choosing something you don't like doing but expect to pay off later may prove to be a mistake. If that option turns out to be really demotivating, you might end up learning nothing. And doing nothing is always worse than doing something you really love - regardless of how much it pays or how happy it will make your parents.