I see the same thing as Rex, people under 30 or over 45.
That's not much different than the demographics when I bought my first catamaran.

I was 24 when I bought my first catamaran.
Not married (married at 25)
No children (had first of three at age 26)
Stopped racing at 28
Started racing again at 48 (1 year after #1 son started racing Lasers)