Comment: I would think "epi marks" would be carried by both identical

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I would think "epi marks" would be carried by both identical

twins. However, THE SAN FRANCISCO CHRONICLE reported in the early 80s that researchers were trying to determine why one twin would be straight and the other gay. Nonetheless, I feel it is probably due to both environmental factors in the womb and circumstances in the home, as many gays experienced estrangement from their fathers during adolescence, when the formation of sexual identity is most pronounced.
Not all cultures condemn homosexuality and it was readily accepted by Gnostic Christians and native American cultures, so "choice" being a "moral" argument (for or against) is not a particularly valid problem, at least in those cultures.