From Takeuchi’s personal life, we know she is and always has been very pro-traditional family. For the series, I recommend that you pay close attention to the relation between Sailor Moon and Tuxedo Mask. Even though he only plays a secondary role in the action, aesthetically he still fills the role of a male guardian (think of the Blue Knight in Tokyo Mew Mew). Bookish university student Mamoru is definitely the stronger persona next to ditsy Usagi, who draws her strength from her purity of heart. One of the girls, the headstrong Makoto, even daydreams of being a housewife and cooking for her husband in the future. Plus, if you read the manga you will recall those sweet moments when Usagi and Mamoru sleep chastely with Chibi-Usa, their future child, between them. What could be more conservative than that?

Of course, there are the lesbians and both-male-and-female characters, especially in Sailor Stars, but that seems like a secondary consideration, and not pushed politically on the reader with the New England moralism of our domestic screenwriters.

Also, Sailor Mercury was my first fictional crush. That might also have something to do with it ^_^;;