Gaming is heavily shunned upon in the corporate and business world. I don't like doing it, but I NEVER bring up anything game related. People in general still have the idea that gamers are lazy people that don't try hard on anything. It's not right, but you can't change this stereotype. You can maybe get away with it if you talk with peers of similar age, but I never take the chance if my relationship goes sour, they don't have any ammunition to use against me.
Only really close friends that I have known for ages or people that I will never associate with in my career will know I am into gaming.