Sorry to hear of your health issues. There are probably a lot of people like yourself who are compelled to work despite of pains. I agree with you that being a laborer is the true meaning of a worker. However, using this definition, society as we know it wouldn't exist. What about hair dressers, waiters or clerks? And even politicians are called for. Sure, it would have been great if evere MP had a carreer outside of politics to begin with. However, I wouldn't write off those who haven't. Compassion is a valuable asset for a politician, and raising one's voice on behalf of those striving is what MPs ought to do!
-Knut