Answer:
It could be that they want you to enjoy life while you are still young. They may just want you to go and spend some of your youth being happy doing things other typical teenagers partake in. Parents what their children to enjoy a happy and fulfilled life. Although it is important to have fun it is always good to study as you have been doing. It sounds like you are very devoted and I Hope you achieve your dream! You will succeed but always remember to take time to enjoy yourself. :)
I hope this helps :D