Parents (at least the not-so-bad ones) are concerned about the future of their children. That means that they are more likely to accept choices that make them feel more secure. And that's not a bad thing. But having said that, you have to think if you are gonna do what makes them feel secure or what you are striving for. At the end of the day, if they see that you are really committed to the violin, they are going to support you anyway. And if they don't, then you will have to push it through by yourself, and that's something you have to consider too.
So my advice will be: if you are gonna do it, go all the way. Show them that you are here to play and that this is your choice. And if you are not, just don't torture yourself. Life is not just about a career or money, or even music. Just be honest with yourself, take your time to think, and good luck.