Importance of gravitational force in normal life?

Answer 1

It stops you floating into space.

It keeps the atmosphere near the surface of the earth so you can breathe.

It allows the sun to burn and keeps the earth close enough to it to be able to feel its warmth.

Answer 2

Everything you do is governed, regulated, and shaped by gravity, with the possible

exception of thinking.

Gravity is responsible for keeping you on your bed while you sleep, keeping you

down on the earth where you can walk and breathe, making sinking things sink

and floating things float, and keeping air down on the earth where you need it,

for just a few examples.