You'll go CRAZY if you ever play an Elder Scrolls game - Get this! The female Lizard people, Argonians? Even they have nipples! They don't even produce milk!
Joking aside, yes it's annoying. It's more a easy-to-indenifty body shape thing though, but it would be nice to see some "alien" races being a little more alien, without having to go full on Silithid to distinguish them from normal "humans"