Oh my god. You really think there are poor people in Brooklyn or the Bronx who, nevermind being able to afford a place in which they are the only people within 50m of 10 other families, can regularly go into the city at a given time in a taxi? The commute traffic into Manhattan is hellish -- who in their right mind would use it to get to work? A taxi is not a replacement for a car, it is a luxury, and it is expensive.

Another poor assumption: that people get dropped off right in front of their homes. Uh, no. I take taxis several times a month to get home. I'm never, never able to get dropped off right in front of my apartment because traffic is dense enough and the one-way streets add another 0.50 to $1 when I can just hop off and take a pleasant two minute walk up the corner.

edit: And another poor assumption: that there is one easily locatable gay bar within a vicinity of where people hail a taxi (again, it won't always, or even mostly, be in front of the exact place they just walked out of) or that, after leaving a bar, people go straight to their own home.