Primaries are still subject to spoiler effects and such.
In my very blue state this year where the top two in the primary go on to the general, there was a local position which had a whole bunch of well qualified Democrats vs just a couple of Republicans. (Incumbent not running)
The dem vote was split enough that we very nearly had just the two Republicans in the general. Like less than 60 votes away.
My parents both didn’t swear (at least not where I could hear them) so I simply never picked up the habit. I can swear if I make a conscious effort to do so, but generally only find reason to if I am quoting someone or something. And even that feels awkward to me.
As for expressing myself, I don’t believe I have much trouble in that regard. There are a ton of other words available and ways to arrange them. And if I truly need to express anguish, rage, etc. there is always yelling or screaming.