Johnnyblues, for most of my hunting career I felt the same way. If I wasn't going to keep the meat or some other part of the animal, then there was no reason to shoot it. For that reason, if I were an American, I would allow these import bans to impact my hunting plans.
Then a light sort of went on.
A few years ago I was hunting for duiker in the Eastern Cape and we saw a very old Eastern Cape kudu. My PH said I should shoot it. I said thanks, but I've shot lots of kudu, and really don't need any more kudu trophies. That began a very interesting conversation around my needs and desires as compared to the animals and the hunting world. My PH, not without some struggle, eventually convinced me that this was the wrong approach to hunting. The question should not necessarily be "will I be able to use this animal" but rather, "will someone be able to use this animal."
As hunters, we have a responsibility to help those who are doing what they can to preserve habitat and animals, or who just have to live with wild animals, and we do that by giving those animals value. It's not good enough to say "someone will shoot it, so I don't have to." If we all had taken that approach, there would have been little incentive to bring bontebok, black wildebeest or scimitar horned oryx back from the brink (I note these were all saved by hunters, not by Wayne Pacelle).
Finally espousing this idea had one added personal benefit - since I was only going to do taxidermy on certain, selected animals, I could put the savings towards taking even more animals, and hunting even harder! Since then, I've had lots more fun hunting than I would have had otherwise. Now don't get me wrong . . . I will still mount the Mountain Nyala, if I am lucky enough to get one . . . but that's not a pre-requisite to hunt one any more.
I'm not saying you have to buy this argument. Just that it's there, and if we all bought into it, we could demonstrate to regulators that these sorts of actions will have no impact on the animals taken. That might - just might - cause them to look at what really matters, and forget the silly, emotional arguments of groups such as HSUS.
Just a perspective.