Its definantly not worth doing a job that you hate. It makes no sense really, accept so that one can live of course. But interestingly one finds that they typically do better at, and succeed more when they follow their own interests. If you don't like your job you can most certainly find another, alternatively maybe you just need to change your thinking alittle.
For those interested I wrote an article called:
Total Wellbeing: Discipline Vs. Desire – Is Discipline Really Such an Omnipotent Virtue?, it certainly brings the whole doing what you love doing thing and doing better at it concept into focus.