I'm related to someone who's the same way with closed captions. Yes, I know you can understand every word. Yes, I can see how it makes you enjoy a show even more because you catch all of the little things. No, I don't want to turn it on this time when you, a totally non-disabled adult, is visiting. This relative has a religious fervor in their need to convert us to CC.
If you're actually hearing impaired I'll probably tolerate it for you. Though realistically we just won't watch anything together.
Otherwise I hate you for asking. Nothing makes a show/movie unwatchable more than having the text of what a character is going to say shoved in my face before they say it. I'd rather get kicked in the balls repeatedly than watch shit with subtitles. It's less severe torture.