Not sure how I missed this thread...
I consider myself to be a seed steward; but we each do the best we can based upon our ability, our resources, and our comfort level. It does bother me when I'm forced to drop something from my collection, either because of seed age, or to make room for something I judge to be better and/or in greater need of preservation. Often that requires a difficult process of triage, to determine the best use of my efforts... and regretfully, acknowledging that I/we just can't save everything. Perhaps the mental focus is best directed to whatever good we CAN do, rather than regret for what we CAN'T. Any contribution we jointly make toward preservation, however large or small, is worthwhile.
See, this is where your psychology and my (unhealthy) psychology differ. No matter how much good I try to do, or even do, I just brood on all the further good I could have done if I had been better, and that negates any positive feelings I have, replacing them with guilt and self-recrimination.
So, under that, I look at every seed I plant that fails and every seed I toss out because I have no room as a personal failure, and one that needs to be brutally punished. I am the one doing the selecting, and therefore I am the one at fault if the selecting goes poorly. And, since I believe is is possible that any seed MIGHT have the unique gene combination and mutations to possibly save the world in the future, that means that, every time I make a decision, I potentially hold the fate of every single person on Earth in my hands, and my mistake could kill all of them. That's terrifying. And that applies if I grow it OR I give it to someone else to grow.
The emotional aspect of giving up on a treasured variety will be brought home to me this year, as I reduce the size of my collection to accommodate the loss of my late DW's partnership in our preservation efforts. It will mean saying goodbye to a lot of treasured friends that we discovered & cherished together.

Hopefully I can find homes for at least some of them, but the future for many of my soybeans looks bleak.
Sounds a bit like me and my corn. Objectively I know that, if any of my corn projects (or, indeed pretty much any other projects of mine.) have any chance of succeeding, it lies somewhere, and probably with someone, else, someone who has more land, more light, better soil, fewer ravenous critters (or, at least, fewer laws to hamstring them in DEALING with ravenous critters), and, probably, a lot of extra labor to help them.
The problem is trying to find someone like that who also 1. is interested 2. does NOT have any plans of their own that they might want to fold mine into (it's happened far too often, someone asks for some corn seeds from me, ignores my advice about letting them inbreed a few generations to clean them up and up their numbers in favor of tossing my handful into their own MASSIVE amount of seed they are working on, and when my stuff gets totally drowned out due to numbers, turn around and say the fault is MINE for not providing them with a seed sample a hundred times larger.) and 3. Is somehow knowledgeable enough in what I am looking for to be able to actually SPOT it if it is there. Since the ultimate goal is a new variety anyway, they also have to not need to reap a comeback each year to justify the cost of growing (for example, If the corn is an ornamental type, they not only have to know which ears to save, but also not to sell the ones that are rejected, since then someone bigger could use THOSE to make a counter variety. Popping them, grinding them, using them for animal feed, those are all fine, but, until the product is ready, one has to be careful to make sure all of the VIABLE seed staying under your control.)
Add on the fact that most of my finds are more curiosities than things of commercial value (I don't think I've had a truly marketable seed idea since the wrinkled soybean project). And you have another problem.