Nicole Kidman is hoping for the best when it comes to her marriage to Keith Urban -- and preparing for the worst. In the November issue of Interview, the glossy-foreheaded, ostensibly weight-gaining Oscar winner is wary about pronouncing whether she and her country-crooning hubby are happy.

"I don't ever say that," she explains. "Partly because interviews are done in advance, and you never know where something's going."

Philosophizes the farsighted Nicole, "People's lives together are complicated and beautiful and that's what they should stay. They're very quiet. Complicatedly quiet. They don't need to be broadcast."

Still, the actress has previously broadcast how "very painful, deeply painful" it was when Urban checked in to the Betty Ford Center four months after their June 2006 wedding, sighing in the October issue of Vanity Fair, "We were in a very, very, very bad, painful place."

Given such a baggage-laden beginning, it's understandable she'd try not to tempt fate by predicting a happily-ever-after.

"My husband and I are committed to each other and deeply in love," the realistic star offers to Interview. "That's how I would put it. We are working on staying in that place and hopefully we will for the rest of our lives."

And Kidman, 40, who for years has openly acknowledged her baby fever (she told Vanity Fair that Urban is "slowly" coming around to the procreation idea), hints that there may come a time when she walks away from her (hit-needing) big screen career.

"I've found other things in my life that can absolutely fulfill me," avows Nicole, who has two children, Isabella, 14, and Connor, 12, with ex Tom Cruise. "That's been a necessity because a lot of my life has been spent living for my work."

One thing Nicole says she's not living for is the public's perception of her burnished, unlined visage: "I mean, I like my husband to like how I look but he's the only person I care about."

Meanwhile, in other Kidman news, does she have yet another stinker on her hands with the much-anticipated fantasy epic "The Golden Compass"? According to the New York Post, early word is the flick is a disappointment.

"It is a $175 million investment for New Line Cinema, which has been hurting ever since 'The Lord of the Rings' trilogy," a source blabs to the paper. "People working on the movie say it is just plain bad."

Among the purported problems: Too much CGI, including a plethora of battling polar bears.

Not so, counters a studio rep, who labels the criticism "bull[bleep]."

Fans who viewed the extended trailer earlier this month in New York would likely agree with that assessment, with one rhapsodizing to MTV, "... I was worried this would be some cheesy, CGI-laden thing, but this definitely has the potential to inspire a fanatical fan following. They nailed it. I'm going to be there at midnight on the first night!"

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