> I claim it's largely because they find working with people more interesting than working with machines.

Well two in particular went into pathology and radiology, so its definitely not the social aspect (they don't regularly deal with patients). Also, what do you claim of the equal number of men who go into law and medicine?

> Your daughters being interested in "traditionally female" things might just be because they're female,

They aren't interested in much of anything yet -- they are 6 months and 2 years old.