Ken, I did not do quite as much but I must say in a way I agree with you because it was STILL easy to get all those miles and beat many systems that many marketers are now stopping left and right, and still relatively easy to redeem them as well.
Starting Jan 1, 2003, it seemed that (A) everyone upped their anti's and (B) they started to catch the holes and stop programs that many liked the workings of.
You hit it right and well-timed, I think.
I sure did like those days when you could actually go to the airport with awards certs and just get on a plane! For me it was the early 90s, but I had so no miles back then.

MM