I agree, in my many years when I started finding I liked guys it was very taboo but it was also almost 50 years ago.Obviously not scientific, but my impression is it is less taboo than, say 20 yrs ago. Gay lifestyles certainly seem to be more mainstream than then, anyway. Maybe my perception is skewed from being close to the theatre set with their high ratio of gay or Bi, but they seem more open and less scorned. Bi-sex is still not admittable in general social discussion, though, and that is too bad!