Seven things that don't make sense about gravity

Why does gravity only pull?
All the other forces in nature have opposites – so what makes gravity different?

Probably a dumb idea but maybe if the universe is just one giant mostly circular ball much like our planet then if gravity attracts two objects that means that at the very same time they are repelling from one another giving the perspective of the distance from the back side of one object all around the globe like galaxy to the opposite side of the other object.
This will require more coffee hehe

[edit on 6/26/2009 by darklife]