I think the major difference between USA and the continent in this matter is very basic. To many Americans alcohol is a way to get drunk, period. It is seen a "the devils tool" and even liberal thinking people sees it as "a bit naughty". It probably comes from the fact that a lot of the original immigrants was, to put it nice, very religous (sekterian to be blunt) and very condemning over the good things in life (Amish-role-model).
It has been mentioned before but the difference is very clearly seen if you look at bars. In USA a bar is a place where men go to get drunk and grope at the waitresses. Nice girls certainly don't frequent bars, and children are definitely NOT allowed. "Sam's bar" was a good example, how many women (not staff) did you see?
In contrast an english pub is, as someone said, "the extension of your living room". The whole family meets at the local pub, talking, singing, eating, watching TV, playing Dart ...etc. Yes they have a pint or two but they very rarely gets drunk. The kids grow up with the knowledge that alcohol is nothing special, somethings the adults drink because they like it.
Regarding alcoholism. I had a brother in law once (they are divorced now). He did not drink much but if he drank it lasted two or three days. He could go weeks, even months where he did not touch alcohol but then, if he had one beer, he went on a rampage. He simply could not stop. That is not alcoholism in the defined way but i say it is just as bad.