I've always flown a lot. I guess it's to do with where i'm from and where I live now.
I made the switch to QF forcibly the day AN went under. I was Diamond Global Rewards with AN, based on MEL-PER-SYD flights, and spent a few days at week at an airport somewhere.
Before I found AFF, I was always QP PS. I was averaging around 500-550 SC's a year, and never quite making it to SG. I never really thought it necessary to 'go for gold' so to speak as I had my corporate QP through work and was largely happy without knowing what the lofty heights of WP offered (back then).
Up until around 2007, I was averaging around 30-40 segments a year. This is when I found AFF and learned what YUPP's were. It was also spurred by my housemate suddenly earning SG from apparently very little flying. I also changed jobs around this time and was fortunate enough to get at least one annual trip to the USA for work purposes allowing me to tack on a 'holiday'.
These days, my flight numbers are a lot lot higher, no thanks in small part to AFF and other sites such as Milepoint. This year i've at 50 segments already and it's not even end of May. I have another 8 booked before the end of June, and probably will take July and August mainly off (although I have to find some time to sneak in the double SC offer from QF to re-qual my WP; i'm still 700 SC's short although i'm only 3 months into my year).
I'm now a combined frequent flyer/spender. I optimise my points wherever I can. Bonus fuel offers on Amex with BP? Sure i'll use that. Sign-on bonus for Virgin CC? you betchya. Paying with cash? Here, let me put that on my card for you.
I now easily re-qualify for both VA WP and QF WP thanks to AFF. The points I earn from my cards and promos are a very decent boost (although around 75% of my points come from BIS Miles). My re-quals for 2012/2013/2014 will all come with absolutely zero mileage runs as well.
And FWIW, i'm at around 125,000 BIS Miles... for the first 5 months of this year
I think i'm a frequent flyer by the most strict definitions