Yes, it seems to me doctors have cures for a bunch of standard stuff that have been diagnosed over the years. If you have something that they don't know then you're on you're own and that's probably why there's such a huge alternative medicine market.

If they want to operate get a second opinion (at least), if you or someone in your family have something that you think is a problem then keep going to doctors till you find a solution. Don't just take the first doctors answer if they don't know.

If you're in the chronic pain or odd problem area though then if doctors can't help go the diet / alternative medicine route - they may have an answer.

There's a lot modern medicine doesn't know, and most practitioners don't know it all anyway.