[Two-dimensional analogy of spacetime distortion generated by the mass of an object. Matter changes the geometry of spacetime, this (curved) geometry being interpreted as gravity. White lines do not represent the curvature of space but instead represent the coordinate system imposed on the curved spacetime, which would be rectilinear in a flat spacetime.](By NASA - http://www.nasa.gov/mission_pages/gpb/gpb_012.html, Public Domain, Link)
Imagine a situation if there was no attraction near the Earth. I want to fantasize a bit on the subject for any purpose there is a force of attraction. What would be our Mio without the power of attraction.
Well, firstly, the force of attraction allows us to move around the Earth. All that we can do today is due to the force of attraction. Any work and any movement, everything has in its composition the power of attraction. On the example of weightlessness, we imagine how our world will look without gravity. For example, the water will be spherical. All work will be given with difficulty and with the presence of a reactive effort. We will need to push off from something, under conditions of attraction, this will be a constant effort created by the Earth. In weightlessness this is not.
If there was no case of attraction, then our world would be internal, for example, inside the ball, where everything would move chaotically, as physics claims, atoms and molecules in gas change. Lack of attraction is the lack of a guide. Yet the Earth for us is a direction guide. It is always from below, and we are from above. Inside the ball, which can in fact also be a guide, since it will limit our movement in a certain space and will not allow us to leave it. Is that possible? This is a closed system, without interaction with the external "world", such a pantry, only a huge size!
So attraction is a way to determine the beginning and direction of development. This is the basis from which our world pushes ...
Secondly, due to the force of attraction, all processes occurring are unified. For example, the sun heats the water, it evaporates, it becomes lighter and rises to the top. There it cools, condenses and again descends to the Earth in the form of rain. Constant water cycle. In the absence of attraction, this is impossible. There will be no easy, not heavy. Everything will change size and shape, but not weight, it will be permanent. All forms of bodies will tend to spherical.
How do you like life inside the ball? Or a cube?