I joined PPFA when I began researching the framing business and decided to open my own shop, which had to be 1987. Back then, I knew almost nothing about framing, but thanks to PPFA books, classes, friends willing to answer my questions, and the CPF program, I have been able to progress much more quickly than I could have without the benefits of PPFA. And the progress continues.
I have the pleasure of attending a dozen-or-so chapter meetings annually, but most of them are for teaching assignments. Gail and I attended all of our local chapter meetings until it disbanded in the mid-90s. After that I felt like an orphan, until the Northern Ohio (Cleveland) chapter expanded to the whole state. Now we get to attend some of the meetings, but 6 hours of driving (3 hours each way) after a full weekday at the shop is a problem, especially for an old guy like me. About once a year they schedule a meeting south of their market and closer to home, which helps. Anyway, we go when we can.
As far as I can recall, we haven't missed an annual convention since we joined.
I earned the CPF designation in 1990 and over the years, four of our employees have become CPFs, as well. I earned the MCPF in 2002.