Punkie makes a valid point. If you go into a supplementary medical role such as a paramedic you have no ceiling on your development and you don't get put into a position where you are ordered to do something you don't agree with.
You can satisfy any yearnings for action and adrenaline by hooking up with a police unit or doing tactical adventures with a suitable firearms instructor.
There is a training course in SA called 'Battle ATLS', which stands for advanced trauma life support. Basically it involves the treatment and extraction of casualties from a hostile environment. Those paramedics (and doctors) do firearms training, all the medical training, advanced access (like rope access/abseiling) and getting in and out of vehicles and aircraft with a dash of speed. I was recently contacted by a paramedic in the US who is attached to a SWAT team, asking for presentation material for a gunshot wound lecture he was giving them. You can go into research and develop techniques and procedures that are beneficial to the profession and there is less chance of harm coming to you and you having to harm someone you don't want to.
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Edit: just saw you don't want to be a paramedic. Okay, how about a medical technician? There is always scope for a ventilator technician, cardiac monitor, or any other kind of medical device maintenance and safety engineer. You don't have any contact with patients and yet you are still helping them and the hospital.
