Why do ants live underground?

i believe that ants live underground because they are safe from preditors, than when they are on the ground.

I believe that ants live underground because they are safe from the rain and that they have to protect the queen ant and to eat food ants live like humans they get food eat it protect they master most of the stuff they do are realistic to the things human do ants have to stay underground to stay alive that's what i believe.