I'm also a little annoyed with all the romances on Voyager:
Just a little too much for my taste.
I think that this is really the heart of the book. It is all about family and community. So looking at the love lives of these characters is a huge part of that. It also makes sense in light of all these people have been through. They would naturally be looking to what is truly important in life and that is people and relationships, friends and lovers.