it's not because they own M3's, but obviously some of them are idiots.
I know one guy who owns 3 M3 (E46 Individual, no Vmax limitation, E36 M3 and E36 M3 GT, one of #350)....if one of his cars seats looks used he takes it to a shop where they put new leather on it.
and as Kyle said, alot of douche bags, and way more here where I live.