In my perspective, heterosexuality versus homosexuality is not defined by a rejection of one sex or another. Rather, it is about the acceptance of whichever sex one might prefer.
I identify as a homosexual because my focus is on my attraction to the same sex. The spectrum I have worked with for the past eight to ten years has been men. This says nothing of my attraction/repulsion of the female sex. That is another spectrum altogether.
I reject your sentence-long philosophy. It's simplicity and narrow-mindedness leaves me far too depressed and unsatisfied. you can live like that if you want, but I'm done.
Under your definition, one could be both a hetero and homosexual at the same time. Being sexually attracted to both sexes makes you bisexual, and there's nothing wrong with that.
There is, as much as it seems reductive, a dialectic quality to sexuality. There is a space in which someone's sexuality is defined both by what they like and what they don't like. An asexual person, and there are plenty, are defined specifically because of a socially perceived negative space with respect to what attracts them.
The interesting part is that the rejection of someone's refusal to consider you sexually on your part is viewed as violently offensive. How dare another man not want me to suck his dick! That's depressing! A shame, really, because this forum propagates the myth that people with no sexual interest in men don't exist. Its strange, because this is the first time I've encountered the narcissism in sexual form. Its probably largely due to the bravado associated with the omnipotently sexual large penis is what's attracted people here. That, in and of itself isn't 'bad', but when it comes to manufacturing myths to sustain a fake pretense to legitimate a fetish there's the possibility for danger.