Does anyone ever have feelings of guilt after selling a card (usually to someone with FOMO) that drops to about 30% of the original selling price a year later?

Case in point-I sold a Pokemon Stellar Crown Terapagos for right around 145$ when it was released, and I saw the comps are hovering right around 40-45$ now.

I’m human, I have a little bit of guilt, even though that’s probably an unfounded feeling, if you know what I mean.