She is just that dedicated... to preventing any possibility of Harry Kim getting a promotion!

But in numerous captain's logs Janeway explains how their adventures weren't a delay at all, and actually saved them lots of time.

Captain Janeway is clever like a fox crazy like a wolverine and loyal like a golden retriever unless you happen to be involved in a transporter accident and she'll murder you like a baboon...

I mean look... there's adventure, excitement, she's the captain of the starship, and the ratio of men/women seems to be in her favor plus she may go for both anyways. She's in THE perfect position, what's the rush?