The instinct of life follow Freud's theory, is sex;
But the advanced development of human, we make conversion the instinct of biology turn to the instinct of psychology, like nonhuman animals, they have sex because only for posterities, so they don't have homosexual and bisexual and they alwasy have the posterities. Most instinct of biology covert by the development of superego from the advanced brain, like less strength of self-consciousness.
Well, but the highest mental case is only limit for human, no animals, including everything developed from the subconsciousness, the cultures, languages, government. Also, psychologyical issues come from it. In some case, nonhuman animals can get the psychologyical issues by training by human's experiment.
Two opposite mood cause conflict and make development of superego, no just single mood because the nonhuman animals also have the single mood. The single mood can cause the activation of subconsiousness, but the two opposite mood cause the psychological issues, only single different between the instinct of life and death.
Raise of single mood can't call as superego.
Every raise of single mood will cause the influence and get out of the unconsciousness. But how about the nonhuman animals?
Did the nonhuman animals choose the sex partner if just for posterities?
Smell, or the see?
Nonhuman animals focus on the physical beauty;
Human focus on the psychological beauty, like personality, but the physical beauty is still important. Except get out of physical objects's case.
Nonhuman animals only focus on physical beauty, like super beauty, only focus on it.
Human focus the beauty that can fit to his ability, like his beauty because human will feel inferiority for self.
Follow the ability of biology and psychology.
The facts of gender self-segregation, male and female segregate with others. Both in human case and nonhuman animals case. The instinct of biology, sex, posterities.
Reasoning and questioning.
Males and females.
The separation from the gender, males and females.
Homosexual causes by psychological disaster.
Why don't the men/women want the sex with women/men?
