I don’t curse in real life, so I don’t like writing curse words in my stories… if there’s a need for a certain character to curse, I’ll bleep it out.
As for reading stories with cursing, it doesn’t really bother me if it’s used sporadically within an episode, but if it’s every other line or when it doesn’t fit the character, then no. The language warning isn’t really a good indicator of how much cursing there will be in an episode, either. I’m reading this story that has the language warning, but I’ve only seen the ‘b’ word bleeped out one time, and the ‘f’ word bleeped out in another chapter. But other stories that have the warning have characters cursing in every other line of dialogue.
For me, it’s too much when vulgar words (like the curse words used for private parts) are mentioned. No. I was reading this story that was pretty interesting, but I couldn’t finish it because this one character in particular had such vulgar dialogues every time she appeared on the screen. It was honestly too much.