There is a reason actors fight for the chance to play the bad guy. The lines are great, the costumes are awesome, the songs are spectacular, their schemes are brilliant, the villains often look much sexier than the heroes, they have their fair share of Cool Planes, Cool Cars and Cool Boats to flaunt, and they don't have to spend the whole shoot pretending they are nicer than anyone they've ever met. No, seriously; it's psychological!
Even the Evil Old Folks can be Cool Old Guys and Cool Old Ladies, if this trope kicks in.
Plus, there are all those wonderful toys!
Why is all that true? Why does the bad guy get all the cool stuff? The more interesting the bad guy, the more interesting the story. It really is that simple. You don't have a story unless you have a conflict. The bad guy in most cases is the conflict.
Plus, there are all those marvelous toys... Wait, we already said that.
