Almost all series i've seen that involve the co-operation of the opposite genders, tend to start as a friendship and end up as a messy drama .
If bones and booth hook up, booth will probably try and make a 'bond' with this strictly logics woman and try to break her down to be more 'human emotional' while Bones will get annoyed and as an independent woman will start talking about something historical as usual, which would probably interfere with their job in solving crimes using advanced technology and fractures of bones. And then the drama will begin...
The plot will shift away from the cases and add more time with the Booth-Bones drama inbetween.
Do we really wanna see this series turn into yet another soap opera? Why can't we just have a series where the 2 genders just have a bond? does it really need to go sexual each time?
Booth and Bones are friends, really good friends, i'm sure you have friends like these 2 as well. Yeah i know you're not solving crimes but at work you might have a friend of the opposite gender who would cover for you, the opinion of this person, you take regard of and you would share stuff, without it being sexual.
Atleast i have a few. And it's more realistic. I've met and know people like Bones. Thinking too much literally but being of high IQ and not regarding emotion that much. (the reason why this happens is a different story).
This series is one of the few i've found that is closer to the male-female friendship and partnership that is actually reflecting realistic points.