Too expensive and Not enough time
Too expenive = A glass/foam pattern kit these days starts at $350.00 and only goes up from there. Stick an engine in it for a minimum of $500.00, then add in all of the wood and hardware (including landing gear of choise) and you're up to $1K before you even stick a radio in it. I personally miss the days of the $125.00 kit and a piped YS 60. Total airframe investment was less than $500.00 before radio.
Not enough time = I do not have the time anymore to dedicate every weekend to practice followed by a full weekend of travel to contests.
I love the planes and flying the pattern. It was never boring to me.
John