Sacred Haven of Debauchery

How can we explain his passion for scantily clad elves?

It's more complicated here. Knowing that his dream of "having sex with a bus driver" is unattainable, Marat (this is the first time I'm calling him by name) transferred his dream to an imaginary world, reflecting his ideal vision of bus drivers in elves. In doing so, he made this object completely unattainable.