Are there scientific or theorethical arguments that homosexual
inclinations are a benefit for species?
I remember to have read once that it is assumed that homosexual
inclinations of a male has the benefit of staying out of competition
with heterosexual males and stay alert to danger while a heterosexual
male is involved in copulation with a female.
He can warn the copulating two if an agressive enemy is approaching.
As far as homosexual inclinations are present amongst most animal
species there must be an evolutionary advantage from this.