I think the topic draws reloaders, so you have some response bias in the survey. However, there has been some pretty massive growth in reloading over the past 4-5 years. I started sometime around 2000 or so, and never looked back for center fire (other than 9mm). At the time, I was kind of unusual among my shooting friends. In the last 12 years I have taught 5 people to reload and at least of them took the same approach of loading almost all their own ammo. The reasons in these cases are reduce cost per shell, improve ammo availability, and in the cases of rifle shooting, improved accuracy.