I've had relationships fall apart because of the four mile G problem. To round it up, Court Square to the Park Slope areas is easily an hour when waiting for trains to arrive. Two hours round trip is why I left the Bay Area transit wasteland for cripessake.
Honest reply: at that time, I lived two houses down from the Court Square E/M/G/7 station and 0.3 miles away from an N/Q stop (and another 0.2 miles away from an E/M/R), so everything was pretty much right there.
Checking in to say that I rode the G once from park slope to Williamsburg for a "quick dinner." The ride took over an hour each way. That's when I decided to never ride it again.