[HammockWarrior]

In my experience, noise cancelling headphones can make noise issues worse in some cases because they block ambient/white noises better than they block voices, sirens or other non-repetitive noise. So it just makes the distracting noises that much worse.

[rv-de]

correct. the most prominent use case for ancs is during plane trips. but I never use mine for that because I prefer the humming of the engines (literally) over the chatting, whining and music from my copassengers.