No, you cannot make that arguement. This has been debated many times here. Just because you have decided to give away your services does not make you more dedicated. I have dedicated my life to taking care of people and given up a lot to do so. I have missed birthdays, christmas, soccer games and the like. During medical school and residency my wife was essentailly a single parent and it killed me to here about the things I missed at home (first steps, etc). I now have a nice paycheck, so what. Does that mean I am not dedicated? Absolutely not. DO NOT even try to play that game as you are ignorant to how wrong you are. I've spent more time learning about the anatomy of the hand than you did in your entire EMT course. If you were truly as dedicated as you want people to think you are, you wouldn't accept being just an EMT. Don't even go there. I've been on both sides and can tell you, doing it for free does not make you any more dedicated.
That is the weakest argument I've ever heard. If that is the case, then they are wasting my time as they certainly do not need a doctor, but I seem them just the same.