system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek Voyager] Why not train more people to be medics?

So there they are, stranded 70 years from home with only an EMH to provide medical care. He does teach Kes some, but that is not a long term plan. Since her lifespan is under 10 years. After she leaves he pulls Tom Paris into service. That is not a good plan.

I am sure the crew records would show who has sown aptitude for the medical sciences, even if they never pursued it. The Captain would have the authority to tell Ensign Jones who is a Biologist that they are now to report for medical training. 

With the holodeck and Doctor they should be able to set up their own form of medical school. They have a 70 years trip ahead of them. They had better get started. They have the time to train people. 

Even with a limited crew size you would think having medical personal would be a TOP priority. If anything happens to The Doctors program they would be SOL.
gpt
Well the Holodeck needed to be available for Paris and Torres date night and WWII shenanigans.  It may have been explained but why didn't The Doctor bring the EMH Mark II (Andy Dick) back to Voyager from the Prometheus?