Families don't count for jack anymore, which is why you need an extra copy to play Lan with almost every game now.
Used to be you bought a game you could just play it with your family, but now you need to buy it once for every person who wants to play.
And if you ask online why that is and if there is a way around it you get smartass goody-two-shoes jumping at your throat because everyone who wants to play also has to pay! "You're just buying the license", "Oh, so you're complaining that not everyone can play the game for free with your copy"? No, I'm not, jackass.
Excuse the rant. Just has been pissing me off lately and this is basically the same thing. They don't want more than one person using the game so of course they won't let you create multiple profiles to make this even more comfortable for you.