I think Heinlein's major influence is that he presented the ideas out there in a workable fashion for the general public in his books. So I kind of agree with you, YGirl. But I do appreciate that he got the ideas out into our society.
GroundedSpirit, there does seem to be some debate on how much sacrificial feelings one should have for another. On one level, it seems romantic and full of feeling. On the other hand, it may also reveal a lack of self worth. But I agree that things are rarely as black and white as they seem...