I bought my 2009 X61s, a 12" thing, with 8GB RAM. That model was released in 2007. My X230, bought early 2012, has 16GB RAM. I don't know why this 12-13" form factor noadays has gone *backwards* back-to-7-years-ago specs... is it because "UltraBook" has to mean "one DIMM slot"? It's infuriating. Instead of replacing my X230 (the X240 only does 8GB RAM) when the screen broke, I bought parts to repair it. Which was probably for the best anyway (my X230 still does the job), but it's still weird I no longer have any replacement options for this apparently unicorn piece of hardware.
Why do I want 16GB? Because I really enjoy being able to reproduce all my work on this tiny little magical piece of machinery which fits in my backpack with no effort whatsoever. It's the *future*. I shouldn't have to accept mediocrity in the place of something that currently already works. I shouldn't have to stand up more resources at work and VPN in when I already have a working solution. I enjoy being able to work offline; working from flaky 3/4G isn't fun.