As for the investment aspect of buying farm land, the 94 acre farm beside mine was bought about 10 years ago for $890,000. It sold last year for $630,000. Don't think you can't lose with land. That unrealistic expectations that a "Bigger Fool" is going to keep coming along to pay an even higher price, is what knocked the whole country for a loop recently. I say buy it because you want it or be realistic about the investment potential.
It's hard to give advice to somebody else about whether or not they should buy land to hunt on. I don't think I could ever justify it myself. I'd want around 100 acres and that means you are going to realistically spend $200,000 or a lot more by the time all the smoke settles just for a hobby. Is this something just for yourself or can the whole family enjoy it? IF they can't can you truly justify spending that much on yourself? If my farm wasn't a farm where I am going to live and if it didn't join the farm where I grew up - also mine now - I'd never have been able to spend what I spent purely to deer hunt. Also mine makes money with row crops and hay unlike pure hunting land. Of course to be fair there, hunting land costs about half what I had to pay.
I suppose if you wanted to later recover your initial investment after buying hunting land, you could sell the property at some point in the future but to me that would be harder to do than to talk about. Think about it. You've hunted this place for 20 - 30 years and now you are going to just walk away and sell it to somebody else. Id have trouble with that. I guess what I'm saying is that to justify buying hunting land, I'd have to live on it too. That way it is a home you are paying for and the deer are merely an extra.
Another negative of hunting land that you don't live on is trespassers. They will pattern you when you don't live there and hunt it more than you do if you're not careful.