I grabbed an upgrade at the end of last year because my ~10 year old workhorse is starting to show signs of aging. Despite 16 gigs of RAM having lasted me thus far I decided to bite the bullet and get 32; so I expect this new machine to last me another 10 years (although I now have a full SSD, whereas my old workhorse had an SSD for the OS and a hybrid drive for /home, so we'll see whether or not it will actually last).