I think there is a more deep-seated issue here then just 'not so cultured' enough to visit teahouse...
IMHO visiting teahouse has nothing to do with being cultured. Pin anyone who sits in a teahouse sipping tea and quizz them about tea and one will most probably come up with empty answers.
I think it has more to do with our cultural preference and orientation - in short, the 'hipness' of things : hanging out in coffee places is hip, sharing a bottle of expensive wine is socially cool, puffing on a havana is suavy; drinking tea - CHINESE TEA! - is well, something cina. Something old folks do.
Many friends from the west I know come into contact with Chinese culture through tea; we seem to be going the other direction - it is more 'with the crowd' to say 'one skinny latte decaf and go easy on the forth' then 'this tea relates to me a nuance that is lasting in the back of the throat, unrolling sweetness to the tip of the tongue'...
We are cultural, only we are embracing the western canon with open arms, and sweeping our asian heritage under the carpet.