alouette3, good post.
Problem is that given a commercial incentive, when a sensible pilot says "No" with good reason, there's always another who will say "Yes!"
There are a lot of dead "Yes!" men but next time, in the heat of the moment, everyone often forgets that.
Knowing when to say "No" is often the most difficult thing about a job like EMS. Over the years I've worked for a number of pushy individuals or operators who think "Yes!" is the answer to everything, especially if it affects their own career path or their personal income. I've learned to keep reminding myself that such an operator can only take away my job and never to let them take away my licence or my life.