Before the Sundering
The world was rich in arcane energy and almost everyone could tap into the veins that flowed through and round the planet. The gifted said you could even see the energy in bright colors across the sky at night. This energy flowed through everyone and everything giving everybody some type of power or ability with an endless supply of conjuration.
Faith in the gods had been thrown to the wayside except for a few devout followers of each faith. As for everyone else, they believed the gods were sleeping or even dead. Plus the rich arcane energy game them everything they needed, who needed the gods when anyone could be a god in this world?