Inspiring players is often a challenge and part of the answer for a GM has to be:
GM something that Inspires You.
If you are excited and involved with the game and its world, it will be easier for the players to become inspired and involved in it. If it is your passion, people will feel that and respond to it, just do not become too proprietary, no vision of the perfect campaign survives contact with the players; The world will both shape and be shaped by player action.
Communicate and Share what Inspires You.
Part and parcel of the first point, but let your player know what inspires and excites you about the game you are GMing. If there are movies or music that communicate ideas about your world, share them, put together a Pinterest board (or use some other site) to share images (I have one for the Sea of Stars, another for Petrichor and for other games and genres including the Noir Revolution campaign). Anything that helps put you all in the same mental landscape for the game.
In my experience, communication between GM and players (and between players) is what makes or breaks campaigns. So, talk, share, debate, build castles of the imagination together.
Not a long post, but I hope helpful. Now, go and inspire people.