[oh8eleven]

lots of insurance companies cover the cost of Viagra
ED is a disease and Viagra, Cialis, etc., are solutions, not sexual stimulants.
In fact, Cialis was just given FDA approval as a treatment for another male only disease, BPH.

[muawiyah]

AND, the purpose is to enhance FEMALE sexual pleasure.

[9YearLurker]

ED is most commonly a natural factor of old age, with the clock turned back by meds so old guys who are generally beyond the procreating stage can have sex again.