I see hunting as like life in general. Some are happy to exist and that is all the effort they put into it. Others live To achieve, and to achieve in this world effort is needed, and in most cases the effort involved directly results in that level of achievement.

Hunting works in the same way, A four point buck shoot on the last day of the season is an achievement as it involved effort.
A 12 point buck shot ten minutes after the feeders timer went off required little more effort than asking the guide to close the gate behind you.A Little effort for a little achievement.
So I guess how you find happiness is really up to you.
Hunting in its self is so much more than the killing of an animal and if you fail to see that then you really are missing more than you will ever know.