Do you find subtitles enhance your movie-watching experience?

I absolutly hate subtitles in English language films. They generally don't quite match the dialogue and they are very very distracting.
But with non-English dialogue I generally read the subtitles without being aware I'm doing so.

Depends on the type of film. It can ruin a lot of the punchlines of jokes while watching a comedy flick.

at some point in the past year, i started using headphones, & when i did that i found i could do without them. up to that point, when i'd been using fairly low-end speakers, i'd almost always needed subtitles - i missed too much dialogue without them.

i still need them whenever i'm watching a film from the uk or ireland - i get lost in heavy accents pretty easily.

often. for foreign, including british/etc, or when the audio is poor. its a great adjunct. there are films employing actors who are fairly indiscernible in their speech.

Yes
I nearly always use subs, a lot of these actors are marble mouths and it's likely my hearing isn't as sharp as it used to be

I do for languages that I’m not proficient in.

I have a huge rodent problem.

Generally only use them when the movie is in a language I am not fluent in.

I have used them with my nieces and nephews to help them with reading. Will even turn the volume off completely so they have to read if they want to watch tv at Auntie's house.