First of all, as a fair warning, don't try to retaliate to BatteryChicken's sarcasm with sarcasm. Many have tried, few have succeeded xD
But I guess swearing is okay as long as you're catering to a mature audience. At that point it's up to the viewer themselves to decide whether they should watch your videos, regardless of profanity. Even though in most situations it's not helpful at all. Especially is gaming where the viewers are more likely to be kids.