Is this because cancer is intimidated by women? I remember myself, young and virginal, being afraid to grace a woman's breast. Perhaps this is why cancer primarily affects older women; similar to how a "cougar" or "MILF" may help guide a young man into their first experience. Is the breast of an older woman more comforting?
I myself was deflowered by an 86 year old woman.
I do not believe cancer to be gay though, perhaps its comfortable relationship with men is more "bro-status"?