Aim is important if you care about what you hit....unless you hunt in certain areas I know about where you can walk right up to the deer, but there's no hunting in those areas for various reasons.

As for why somebody would want to hunt a deer: I don't know the answer to that. I've tried deer from various parts of the country, along with elk, moose, bear, and a variety of other game. You can make deer palatable, in my opinion, but it's not something I'd seek out.