I am going to move in a bit of a different direction while responding to your question in a general sense of "doing" all you can for as long as you can.
First and foremost, do everything you want to do before you can not. The body will give out and when it does you will miss doing a lot of things that you once took for granted.
I wish I could still hunt, but I also wish I could Tango in Buenos Aires one more time, or scuba in Cairns Australia, one more time, drive a Ferrari through Nevada or Italy one more time, high tea on The veranda of the Victoria Falls Hotel one more time, sail, drag race, fox hunt via horse back, travel--------
My point is, if "hunting" is what you "want" to do and yet your finding it hard to get "up" for it, perhaps you need to try a more unusual hunt. Go dove hunting in Argentina, Caribou in B.C., Coues in Arizona, Turkey in Old Mexico, . You have some very nice hunts lined up and yet the enthusiasm for them has diminished, maybe something a bit different would be something you would look forward to doing.
However; Maybe you need to look at a different hobby, you may find that you will get just as excited doing something different, just like you did when hunting in years past. Also if you give it up for a year or two, you may find a renewed interest and enthusiasm in hunting again.
I loved to hunt, but it wast the only thing I enjoyed or looked forward to doing and for me the variety of activities kept them all enjoyable to me when I was fortunate enough to do them "Variety is the spice of life"
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