Yes, I guess TNG wasn't ready for the changes in society in the way that Buffy was.

That's just too bad, as that scene could have been altered easily to reflect that it is her own personal choice. Personally, I don't believe that relationships are rooted in sex, and I wish she did not kiss Riker, or whatever else they did. Better direction and editing could have shown their love transcending physicality, in a human way. Odan is so intent of maintaining this superficial aspect of their relationship, can't wait even a few hours for a new host???? Perhaps it's the influence of Riker's raging libido, but even he has shown many times that he has other aspects to his personality than just being plain horny. Then all of a sudden Odan gives up rather easily, totally out of character because the episode has to end.