if homosexuality was inherently natural, a gay dude wouldn't be able to impregnate a woman bc why would a gay sperm be attracted to a female egg? but the fertilisation happens bc contrary to feelings, the body's physiology does what it is designed to do
there's no such thing as homosexuality in the realm of nature, it is merely an expression of an anomaly in sexual orientation. the only orientation the body conforms to is heterosexuality, that's why sperm from a gay person can impregnate a female and produce viable offspring
that's also why a straight dude can impregnate a lesbian. our bodies are designed to obey natural laws and will continue to do so regardless of how we operate our autonomy of will to defy our biological algorithm