Irritating as it is, I remind myself to find the amusement when a warrior who has charged ahead and aggroed every group in the compass onto the party dies and then rants about what a "noob" the healer is. Last time, I was the healer and was so mad.........especially when he told me that his warrior had done waaaaay more damage than my character had since her creation! Well, yeah. She's a healer, he's a warrior. It's a no-brainer.
When husband and I play in a PuG together, it's usually, "omg, really? She's your wife? That's cool! I wish my (gf, wife) would play but not women are into gaming" type of response.
A player got peeved the other day when I popped into Shing Jea (I think) and commented on the potty-mouth language with a comment similar to "You can tell school's out. All the 12 yr olds have come out to play." The player came back with a "who you calling 12, damn it! I'm 13!!

" Yep, that makes a big difference.
There are immature players at all ages. I took a screenshot in the Marketplace yesterday of some moron thinking he was cool by insisting in all-chat that a female avatar "suck my c***" (edited for some decency). He was so insistent that soon he was shouting in all caps and then added a few variations. Most people seemed to be ignoring him, luckily.
Yes, I know that's what the chat filter is there for, but why should I be forced to have it set high for disrespectful people thinking it's 'cool' to use excessive profanity or vulgar language? I can understand (and indulge myself) in cursing at a foe in battle or even dancing on their cooling corpse afterwards, but the generalized inappropriate language and behaviour really only shows immaturity, not any sort of 'cool' factor.
If I were the parent walking in to see that being typed/used by my kid, they'd be blowing bubbles for a week!