Because they're busy trying to protect everyone and have a lot going on.....if youre looking for a different answer maybe be a little more specific
The chief gods of Greek mythology were commonly referred to as the Pantheon.πολλούς θεούςthis is the way to write 'many gods' in greek.
They were gods. They were born that way.
a act of gods or something like that
No, they are immortal.
from the way they had the gods who destroyed the remains of the underworld
There is no WHY about the Greek gods. All the gods were belived to have each their responsibilities. Hera's were marriage and childbirth. That's the way it was.
that was the way the Romans named their version of the Greek gods/goddess
yes, they did. After all, the Gods were a product of Greek thought.
the greek gods do not exist but are lord god dose but always beliven god and he will all way help you in needs
Romans worship their gods through feasting. For example, Saturnalia.....
The Greek gods didn't have symbols the way you might be thinking.
By way of sexual appealling at their temples.