I reconciled myself to euthanasia of cockerels last year when thinking about hatches. For some reason, no crow collars seem unkind to me (maybe I'm wrong in holding that view, please convince me otherwise if you can). Also, I'm not confident in my abilities to maintain a rooster, especially if he hasn't got an older, wiser rooster to learn from.
I talked it over with Mark, who reminded me of three things.
First, any cockerel who hatched and grew up at my house would have a far more joyful life than almost every other cockerel (he's thinking of the egg and meat industries). Second, no chicken knows the end is coming. They live joyfully and get the best from every moment, without fretting or worrying about looming death. Third, he can put a cockerel to sleep humanely without scaring the cockerel.
I immediately saw the logic in these points and got over my fear of euthanasia for healthy cockerels.
But if I can be convinced that no crow collars are harmless, I'd think again.