Joined Qantas Frequent Flyer in December 1996, flew only for leisure and have 3,999 status credits with them (lifetime Silver - aka Ruby - is 7,000). Most of those were accrued in 2005-2008ish.
Went on a working holiday to Dublin for a year (it's now been 14!) and joined Executive Club in May 2006. Since then 6,300 lifetime tier points.
I didn't switch my crediting to BA until well after 2010. My first Silver card expired 07/14 so I've been at Silver since late 2012 apart from a happy 18 months at Gold.
Virtually all my flying is leisure. I'm aged between 30 and 50