What is the energy or the thing that attracts us humans to the Earth?

Gravity?

Gravity?

I don't know but I think there is another thing.. OK don't care about my silly question :P

You may have to re-word this to make it more clear what you're looking for.

Gravity is pretty much what holds us here... so what do you really want to know?

We are attracted to the Earth... in that we live here on this planet, because it will sustain us (for the time being). We have air, food, and water, and sunlight. We also don't have much choice of anywhere else to go at this point.