Well I know a lot of people cite Ancient Rome as being "openly accepting of gay men" But actually the reality is that genuine homosexuality or people claiming to be LGBT was not actually accepted in most cultures. In Ancient Rome, men of a higher status often slept with younger male slaves, but it was a fashionable movement, and called "Greek Love", this idea that a man having sex with a young and attractive boy (only being allowed to take the penetrative position) was a symbol of the man's strength. It is similair to male animals raping another male animal as a sign of social dominance. "Greek Love" was often used as an excuse in following soceity for male gay relations, but became gradually less accepted. I believe that the disallowance of LGBT attitudes was in cultures previous to Judeo-Christian based upon ideas of Masculinity and Femininity, and the emphasis they placed upon the impregnating of women as a desirable thing for a male. For example, if you had a lot of wives and a lot of children it was a sign to others of your fertility and therefore would make you more masculine in the eyes of others. Being gay was not even a concept back then and while I'm sure homosexual relations happened I dont think much importance was placed on attractiveness or love or romance like it is today.