Because UV rays make vitamin D, and that's probably as far as he thought about it. Anything else is big scary science man talk with risks about something as "healthy" as unlimited concentrated artificial sunlight.
Next up: let's outlaw soap so that we can all have really good, well practiced immune systems.
Actually maybe I shouldn't give them ideas. They might try that.

I think the hunting part is kind of fun. Going camping, learning the habits of the animals nearby, finding a place to take advantage of those habits, etc.
It's the actual killing part I wouldn't be able to do. But since I do eat meat I can't fault hunters. In fact, I suspect a lot of hunters who do eat the animal actually have a lot of respect and sadness for the actual kill, and try hard to make it as humane as possible.