Have you ever admired something dark and twisted? Something able to commit the most immoral acts, but it cannot take the blame simply because of what it is? Take the ocean in example, it can be beautiful, but deep in it’s darkest depths lie death and it can destroy everything it touches.
I adore the mind of the villain. No villain starts of evil, each villain starts off when something is lost to them and it damages them deeply. They become an entity like the ocean, alluring to look at, but dangerous to interact with. They will risk it all for their own personal gain or for your absolute destruction. And all you can do is sit in awe of the power they gain through giving up their morals and giving into their deepest, darkest, and most primal desires that each being posses in their innermost reaches of their mind and soul.
Heroes go through their trials and come out with the love of others and their faith in good, they have everything to live for, even if they lose one thing, they find another. Villains lose it all, they break apart and build themselves up into something disturbing but at the same time you can’t help but admire their unwavering determination for what they believe in and you also can’t help but wonder at their tantalizing words they speak and all you want to do is bite into that apple and taste that overly sweet poison that contains what you want the most.