I think a student should choose a major he is interested in. Firstly, a job that interests him will provide an compulsive to work harder. He will be more willing to learn. And this is the key to getting an excellent result. Secondly, I think there is no need to afraid the difficulty of finding a job. If you are good enough, there will always be a place for you. And it will be a touture  to work on the job you do not interested in for the whole life.