>> I hate to give people old seed,
That very true, but I was thinking of the "old packets" mostly for display. You know the kind, elegantly folded from pretty paper with GOOD handwriting. Maybe set the 4-year-old ones to one side under a caption "look up this seed's longevity but give away the 2-year-old ones.
Not really being argumentative, but pointing out a mistake I made that worked out well. When I started starting seeds, I seldom worried about the age of seeds and didn't ever think about "start-ification".
So I started some seeds indoors that needed stratification . Really really old seeds! And I got better germination than I expected from fresh annual seeds (in my case, 50%).
Much later I understood that I SHOULD have had very low germination for two reasons. Then I learned that the two mistakes had cancelled out. They were not only pretty long-lived seeds, but their dormancy mechanism faded out faster than the seed viability did.
They had sat around long enough to lose their dormancy but not their viability!