Damned son.... who need 32GB+ of memory in their machines today? Even most games are happy with a little over 4GB's of memory, bottlenecking at 8GB's.16gb testing is no longer a value. For this new generation i want 32, 64 or 128 memory kits.
32GB's is enough in my opinion for any PC, gaming or not, at the moment. I'd more like them to increase GDDR5 memory on video cards to about...... oh, 8GB's to start out with.
"Any PC, gaming or not?" I could use as much RAM as possible dealing with graphics, modeling and the like. My current MB maxes out at 16 Gb, limiting how much I can work with any scene. 32 would be a nice *starting* point, AFAIC. I also have a tendancy to run VMs for various reasons (work, testing/trying out OSes, troubleshooting) - I can certainly use more RAM.
It's all in what you do. What might be "enough" for you might be fairly tight for someone else's use.