I guess nightclubs are important - if you are the club-going sort. I've never made a deal in a club, solved a problem in a club, or even actually held a decent conversation - its too dang loud for that.<p>As for a break from codeing or whatever, I get on my bike and ride. Builds me up instead of tearing me down, physically and emotionally.<p>I'm just not sure the bar-hopping sort is whom I want to meet/hire/work with. Probably makes me puritanical and staid; but I get things done. The best developers I know get things done; none of them frequent/even care about the nightclub scene.<p>In fact the nerdy, knowledgable deep-think architect/designer crowd I hang with would look absolutely ridiculous in a nightclub.<p>So I'm thinking, no, its not a lack of clubs that keeps a city from being a tech hub. Its more likely an accident of history, not yet reaching critical mass, some missing tax incentive or something like that.