The day my girlfriend or wife starts to limit what I am allowed to buy, is the day I leave her.
You obviously don't have kids or can even comprehend their importance in a relationship. Leaving a woman you have multiple kids with over a squabble involving videogames she's afraid the kids would get into is in pretty poor taste.
On topic, I'm still very skeptical, but my brother is sold on it and is buying it, so I'll just borrow his copy to check it out. It should keep me occupied for a good 15 hours at a bare minimum, just because of the vast nature of these types of games. Even Just Cause kept my attention that long.