Some gamers are fuckwads Of all the ways I spend my free time, playing games online is the only one I would describe as "frequently barbaric". Insults of all kinds, including racist and homophobic slurs, are commonplace.
The women I know who play online avoid anything that would identify them as female -- including voice communication -- in order to avoid the unwanted, and frequently negative, attention.
And that's just how players are intentionally insulting -- what some people do while playing online can also be aggravating.
Cheating, team-killing, entering a game but not playing, quitting before the game is over, and more, are all relatively common. Common enough that it was deemed worthy of a Penny Arcade comic, speculating about why normal people become fuckwads online.