The Earth at the moment has cancer.

It's name:

Heterosexuality
 
Caused by:

Constant breeding causing massive overpopulation which is spreading across the planet

Some of the major symptoms include:

Destruction of natural resources using up all the minerals and life forces that help the planet survive,

Destruction of other species for the exploitation of it's own species,

Poisoning of the waters with it's excrement,

Chocking of the airways,

Diagnosis:

Fatal

Treatment:

Possible ways to help stop the progression may be massive doses of sterilisation shock treatment.

The above attack on heterosexuality to me is as absurd as when heterosexuals attack homosexuality.