All three follow the same cadence of quick shots showing cool people in the trappings of a luxurious and fun-filled life.

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He says it is being driven by generations molded by television shows like "Seinfeld" and "Friends, " where city life is shown as being cool again -- a thing to flock to, rather than flee.

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"The best thing I've ever been in my life is a mom, and to help someone else is a cool opportunity, " said Michelle.

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