RE: Losing my desire to hunt
My guess is that you are not interested in more than just hunting. Do you still enjoy the other things in life that you used to? Could be the big "D": depression. If so, don't let it just hang there, talk to a professional about it. I am as macho as the next guy, but because my brother is a counsler, I have had the opportunity to get some good advice and counseling several times in my life (not by him, just at his recommendation) and I have to say that it made a big difference.
If that is not it, then you may just want to quit for the time being and see if the fire comes back. Or, as suggested above, try something new or take a kid hunting. Today, I get more out of taking a kid hunting than I do hunting myself. This fall, we are having our second annual Father/daughter hunting weekend. Not all the daughters hunt, but they still have a blast. Going to have 7 dads and 9 daughters.