I recollect a little story which I found in internet.
A grandfather is talking with his grandson and he says there are two wolves inside of us which are always at war with each other.
One of them is a good wolf which represents things like kindness, bravery and love. The other is a bad wolf, which represents things like greed, hatred and fear.
The grandson stops and thinks about it for a second then he looks up at his grandfather and says, “Grandfather, which one wins?”
The grandfather quietly replies,
We all will do whatever we want to do. We just find reasons to support that.
Now to your answer.
Evil is exciting.
Evil has grey shades.
Evil is a change from usual routine.
Most importantly evil is real. No sugar coating. A bad boy wants only one thing from you and he doesn’t play a ‘nice guy’ to get that (A nice guy eventually also want the same ‘one’ thing but he play nice for that).
You can adapt boldness of evil, originality of evil and many more qualities. World has every thing. You become of what you choose.