What would happen if all the gravity in the Universe suddenly was no longer

You would have to start sucking more than you already do just to keep it all together.

Interesting question.

Gravity, as I understand it, was the first of the four forces of nature to break symmetry. It is by far the weakest of the four forces, but without it there could be no dynamics anywhere in the Universe. Without gravity, entropy (everywhere) would go to maximum, energy would instantly drop to its lowest state and the Universe would come to an end almost instantly.

Gravity and light, they are the two major players that orchestrate our macro-realism, in my opinion.

Quite literally we would all be in serious trouble, because without gravity EVERYTHING in the universe would fall or fly apart because nothing would be held together. NO planets, stars, etc...nothing could ever exist.

since its an if, we would be floating in space. the earth would fall apart into tiny pebbles, the sun would dissolve into gas partcicles, no solar system and so on

Every planet and star would explode like super novas.

Superman will save the day.

We would all die because we would float out of the atsmophere and be burned and suffocated