It was always "demon" (spelled daemon or dæmon), as in a spiritual attendant. Christian mythology has poisoned the word, and anyone who says "daymon" to not offend them is a coward.

See here:

https://www.merriam-webster.com/dictionary/demon

[–] spartanatreyu@programming.dev 13 points 13 hours ago

I say daymon not to avoid offence, but since it sounds cooler than demon.

A demon sounds like a fiend that has only been around for at most a few hundred years, but a daemon sounds like it has been around for a few thousand so it is much more dangerous.

[–] BetterDev@programming.dev 18 points 15 hours ago

Calm your tits (meaning your birds), I say "daymon", and I relish any opportunity to offend the overly devout.

My reason is simple: I learned the word by reading it and sounding it out, and that's more badass than "haha I say demon because I'm edgy"