Luxuria

luxuria (lust): "One of the seven mortal sins. It is usually thought of as intense or unbridled sexual desire. However, lust could also mean other forms of unbridled desire, such as for money or power."
Henry E. Manning says the impurity of lust transforms one into "a slave of the devil".

I've always felt like something was missing. I craved that something, like I craved nothing in my life before. And when I finally found it, there was no turning back.