@Beautiful3
I believe you only have a problem if you cant go without. If you said I'm not drinking for the next 7 days, would you feel fine. If you cant cope and break open a bottle, then you have a problem...
This. Some people do have a glass of wine (or two,) in the evening some nights, and it might clock up to 3-4 bottles a week. I don't think that is a MASSIVE amount, but I think it's on the borderline.
In other countries they drink a glass or two of wine a few times a week (with their meals usually,) and it doesn't seem to do them any harm, but I don't feel like they are dependant on it, and it is just a social thing IYSWIM.
I think if you are drinking 3-4 bottles a week whilst sitting alone and watching TV/mumsnetting, and that's not great. It's not AWFUL, but it's a good idea to keep an eye on it.
@prayerbeforebed
As the poster above said, could you just stop right now and go without for a long-ish period of time? Not just a week, but have none until say, May the 1st? Or do you feel stressed at the thought of no alcohol for just over 3 months?
If you DO feel stressed at the thought of no alcohol for 3 months, then you do have a problem.
I can easily go MONTHS without alcohol, and it doesn't bother me, but I do like the odd sherry or whiskey (and a glass or two of wine with a nice roast meal,) but if I could never drink alcohol again, it wouldn't bother me
I would say my weakness is probably food. especially cheese and chocolate and general 'carby stuff...' Also cakes, biccies, and pastries.
I admire and envy people who are disciplined and stay slim and fit - and don't eat much crap (like me.) 
So we all have our weaknesses and vices.
@peanutdust Your parents need to go to rehab by the sound of it! 