That's probably because of the average age of Uni students.that's quite interesting if it's true, i always had the suspicion something like that was the case really anyway though considering that out of all my mates the cleverest ones all seem to be gay, and like you get a much higher % of gay people at uni then the national average thing etc, but i always thought that was just cause they worked harder to try and achieve something because they felt they needed to prove themself more etc