I don't think it is anti social or impolite at all. Regardless if you are driving or otherwise, who cares if you drink alcohol or not? On many occassions I have not bothered to drink alcohol & I would usually have one wine if driving but sometimes I don't feel like it & I agree it affects my sleep. I don't really notice anyone drinking alcohol or not, unless I know they are ttc & I wonder if they are pg! Also, I have alot of friends on health kicks & alcohol just doesn't fit into the equation. I don't understand why it is anyones business if you drink alcohol or not. It's a bit like coffee & non-coffee drinkers, hey?