I think its healthier not thinking about the ones you had to let go off for whatever reason, from a loss standpoint, even if its a question of curiosity. Best moving on, knowing you've got better coming in the pipeline
I don't resell domains, but I had userid.xyz that I dropped last year because I wasn't using it. A while ago I saw the person that grabbed it was asking $5k. Now it's just "make an offer". Seeing that .xyz is getting a bit more popular I think I should have kept renewing it.
The domain history is pretty weird. It has several <1 year add/drop cycles which I don't understand. Anyone know what the deal is with that?