Since death is always just at arms length, and can tap us at any moment- The important thing is to just get out there and use what time we may have, in some meaningful way. Some guys spend more days in the field in single season than others do in a decade. I'am 63 and don't hunt anymore, though I shoot daily. Iam perfectly capable of hunting,but have choosen other interests. Between the ages of 40 and 60, I averaged about 100days hunting per season. Id have to say that although Iam in fairly good shape, at the age of 63, I know that Mule deer hunting or Elk in elevations above 8500ft. very taxing. This would not have been true 5 or 6yrs. ago. I say, if you have a desire for this mountainous hunting--do it sooner rather than later.