1.75% of Americans are gay.
Around 5% of Americans have bi-polar disorder.
Around 3% of Americans have schizophrenia.
There are known and diagnosable mental disorders that occur with more frequency than homosexuality.
To my knowledge, homosexuality is the only psycho-physiological anomaly that occurs in less than 5% of our population that we do not try to treat, cure, or prevent.
More than 1/2 the serial killers are gay.