Do what you want to do. I hope this does not come across as mean, but you parents should support you in anything you will do. I think there reaction is more about you leaving them and being so far away than anything else. This is quite common, over time they will get used to it.
You should follow your heart and do that, otherwise the next thing you know you are 35 and still in the same job, and wishing you took the jump when you was younger.
I left for Oz last year, everyone was telling me to get a job in the UK and blah blah blah, in the end if was the best thing I have ever done, so many new doors opened.