I've lived in and currently live in a different culture (Latin America) so I'll respond to what I observe in their culture.
1) yes, everywhere. And for pretty much everything too. We all think we are independent minds (partly because we know it is popular to portray oneself that way, ironically).
2) Costa Rica, where I currently am, has been becoming a drug corridor for traffic heading to the US. This will affect availability. Supply is the other half of demand and is a big factor in prevalence of drug use.
3) Costa Rica is very Catholic and many believe that it is a "sin".
4) Costa Rica is more sexually conservative but it's not all that outrageous (except to the very religious). But generally because people live with their parents till they marry it is less common.
5) I don't know that I know of a meaningful difference.
6) They are less prevalent, though obesity is becoming more common as US fast food franchises have begun doing lots of business here.
7) Much more homophobic but like most of the Latin world the prejudices are more common but also less extreme. i.e. you see much more racism and homophobia in most Latin American countries but not as much violence etc, their racial histories are generally more systemic discrimination (that persists till today) but less lynchings and the like.
8) I don't know if they do so to a different degree but there is far less drug use in Costa Rica than in the US among children.