Frog you put to much thought into this LOL
I've always wondered about things like this, same as why don't ghost just sink into the ground.
My pet Star Trek hate is in TNG, whenever they call the call the Enterprise the federations flagship. Being that they use naval terminology, and that the lowest rank that would fly a flag is a Rear-Admiral, and Picard, is only a Captain, thats wrong. Actually now I mention it, Jean-Luc Picard, the worlds only French Yorkshireman.