No,it isn’t completely normal. Or, rather, didn’t used to be , but this generation doesn’t seem to be able to pick the time and place. Sure, we all swear from time to time, and in what situation,but now youngsters don’t seem to have any discretion.
If you think it OK to swear in front of women and children, then HCJ is right.
And it is an age thing. Don’t try to tell me it is as prolific by the elderly as by the young adults.