What you dont drink????

An irritating question teetotallers find themselves. I dont drink and I dont smoke. I dont even drink coffee (which my dad thinks is a matter of shame, being a tamil Iyer from madras.) It is not that I have something against drinking or people who drink, I just dont want to drink. As a result i end up being the social outcast. People dont invite me for the friday night parties, citing the reason i dont drink esp. desi friends who dont want me hear their dark secrets :) Of course I always get invited for sunday lunches and weekend barbecue parties. I have been in lot of embarrasing situations. This incident happened last quarter. A French girl who was my doubles partner in my tennis class, invited me to her place for dinner at the end of quarter. She raised a toast with an expensive wine, then this interesting conversation happened

Me: i dont drink.
French Girl (FG): "You are above 21 rite?"
Me: Yes. But I dont drink.
FG: What is the legal drinking age in India?
Me: 18
FG: Then, why you dont drink.
Me: I just havent started drinking.
FG: Then now is the good time to start.
Me: Well ..... I prefer not to.
FG: My 13 year old sister drinks wine on special occasion with my family.
Me (trying to funny) : My 80 year old granny has never tasted drinks even on very special occasions.
FG: Do you prefer BEER instead?
Me: Sorry I dont drink any form of alcohol.
FG: BEER is like coffee, it is not alcohol.
Me: As a matter of fact i dont drink coffee too.
FG (thinks for a minute): You are not suffering from any disease are you?
Me (trying to sound philosophical) : No, I just dont like the idea of loosing control of my life, I always want to stay on top (no pun intended) of the situation. I just dont want to get addicted to anything including caffeine. Thats why i have never tasted alcohol.
FG: Well I heard even Gandhi never drinks, I am proud of you.
Me: (Blushing ...) Well I am great, but not great. Atleast not yet.
FG: (thinking I am show off) Let me see, if I can find something else.
Me: Coke or pepsi would do.
FG (looking into the fridge): Since I am leaving the country, i have nearly emptied the fridge. I just have plain milk.
Me: That would be fine.
FG: Okay as you wish (pouring me a glass of milk)
Me: Thanks.
(to make matters worse she gets her handycam out of her luggage)
FG: This is so funny and wierd, I am going to shoot this video and show it to my friends and family back home.
Me: Is this necessary?
FG: This is just damn funny ( and starts recording)
Me ( I keep my mouth shut so as to not to embarras myself and raise the glass for the toast)