I estimate I have spent about 850K airline miles (not including hotel points), but that is over about 15 years.

For those spending that much in a few months or those spending in the millions, my only question is not how did you get that many miles, but where do you find the time (vacation time) to spend that many and still fly enough on paid fares to retain elite status? I can understand if one takes a family to SYD in first class that miles spent go up rather quickly, but trips to SYD are not usually weekend events. Have some of those miles spent been used for business travel as opposed to leisure travel?