well..completely missed this topic
Im 25, been into meat since i was 13/14 or so. Although i'm 25, i do usually tell people im 24, as that was a good year for me, so i'm sticking with it...
As for the youngest meat fans - i do believe that my twins are the youngest, at 9 months - correct me if im wrong though. :P They have always listened to meat - with a mother like me, they stood no chance

I was 4 months pregnant with them when i went to my first meat concert, last year, and they were born to BOOH, so they had a good start. They both love Objects - it quietens them down when they are grizzly...there has been many a night when i've thanked god for Meat, i can tell ya...