Passion In Death Poem by Ima Ryma

An antechinus male I be
Marsupial - look like a mouse.
A year long sperm maker is me,
Then orgy to death - I don't grouse.
Couple of weeks I go non stop,
Meeting with females left and right.
Girl after girl I pick and pop,
Speed mating through all day and night.
My body quickly takes a toll.
The vital parts start to decay.
Dying grotesque becomes my role.
The girls begin to run away.

Why such a self sacrificing guy?
I just am and I don't know why.