Advise Needed Please

I am not sure about putting swear words in writings. This dilemma does not seem to be
covered in any how to books I have read to date. I am not a prude & have certainly sworn a time or two myself. However this is causing concern for me(not sure why). Should I even care? If a character needs to swear to drive home a point do I just go with it?

Thanks for any direction :)

Looking forward to Tue. evening.

Happy snow day.