Still 42 and kicking down here.

I can tell you for sure that very few of my customers are under 30.
I do have a good handful of sales to the 30 to 40 year old crowd, but most are over 40.
I have been working with high school kids the last four years or so (see junior audiophile circle) and it is really cool watching them discover high end audio and learning just how good it really can get. It is hard to say how many of that small group will grow up to really love an appreciate music enough to become one of us audiophiles, but I bet it is still very few.