Why are all gay men into disco regardless of age? Anon.
LOL, do you mean the age of the gay man or the age of the disco record?
To my knowledge -- which is considerable -- most gay men these days are not into disco. Even back in the days when disco was popular, not every gay man was into disco. Just like not every gay man is into opera or into show tunes. Some like jazz, rap, big bands, what-have-you. Some gay guys don't care for music at all.
I've no doubt there are gay men today who fondly remember the disco era -- and perhaps their youth -- and still enjoy listening to their collection of disco records now and then.
Okay, when the Tramps [or was it Trammps?] came out with their record Where the Happy People Go -- I believe that was one of the first big disco hits, but don't quote me -- it was widely assumed that "Happy" meant Gay, but it could also have been Happy meaning Happy. My recollection is that plenty of straight people went to discos back in the day.
I'm old enough to remember "Body Contact Contract" and Donna Summer's "Try Me." [Of course I was just a wee babe at the time! I was always the cutest little kid at the disco!]