I am 46 years old and have 14 children, ages 23 to 5 yrs old. I started quilting at about 38 and it had nothing to do with age. I am also a red belt in tae kwon do, two belts away from becoming a black belt, which I fully intent to make irregardless of age. LOL I do think some of us have more time for quilting as we be come empty nesters and retire.
I also second that many very young people, both male and female, are learning to quilt. My youngest one was 3 and she still quilts at thirteen.