I've had co-workers jokingly tell me I'm too young to quilt, but never has another quilter said that to me! I don't even know what that means! "Too young to quilt" to me implies little children that might hurt themselves with a needle or scissors.
I am younger that most of the ladies in my guild, but not (I think) THE youngest. And many of my guild-mates are teachers and regularly involve "their kids" in quilting. I'm a new member so haven't seen this myself but I know they brought in a group of these kids (ages 8-13 or so, I think) to show off their quilts not too long ago, and sponsor the kids so they can come to our annual show.
I'll turn 40 next year. I'm too young to give up my hobby, and too old to care if anybody else thinks I'm the wrong age for it!!