Who's the real monster here?

Some people thrive in the dark others just want out. I think it's a nice place to visit. To remind you of where you don't want to end up.

You think I'm a monster
but you want me in bed
you love all the darkness
and want all the pain
to spill the last drops of light
I keep locked in my head
but I'm not the monster
that you think I am
I'm probably the only one
in your life
that gives a damn
those last drops of light
they keep me alive
so if your plan is die
adios baby, good bye