To be honest, I didn’t wanna waste any world energy point. Now I have 41 and I sleep 6-7 hours undisturbed, but a year ago, I was setting the alarm to wake me up when the world energy was fulfilled. I’m in love with this game, that it is. And still no cure available 
And almost all players I know do the same thing as me, when the titan appears in the middle of the night. This is what I call dedication 