Producer and writer Brannon Braga expressed regret at not having a broader sexuality on the long-running series.
As a big Trek fan, I can't say this has niggled me. Star Trek has often challenged mainstream ethnic, gender and sexual norms: The Original Series had the first inter-racial kiss on television, for example. Deep Space Nine had a romance between two women (or at least two gender-neutral slugs with female hosts), and Voyager had a female captain. Many episodes dealt with prejudice and bigotry, such as The Next Generation's 'The Outcast', in which the womanising Riker falls in love with an aberrant female on a supposedly genderless planet. ("Commander, tell me about your sexual organs.")
These all sound tame now, but given America's generally conservative free-to-air television culture, each was something of a coup.
Nonetheless, for a series that has prided itself on its liberal, tolerant outlook, it's odd that there wasn't a single gay in the village. In many episodes of The Next Generation, the characters bang on about their enlightened civilization: no hunger, no poverty, no war. But no queers, either.
Does it diminish my esteem for the series? No, not at all.
But it's a healthy counter to Star Trek's self-congratulatory utopianism, fictional and from the studios. The general principle is this: when we imagine a utopia, we have to overcome our own prejudices, not simply those of others.
And this is partly why utopias are impossible.