What purpose would 16GB Of RAM serve you?

I don't have the best system by far. I use mine for gaming Files server and web server and video editing. I have 6 gig ram with 1TB HDD. I never go over 2gig on my ram. I might be using a little more than 1/2 the HDD. as far as gaming goes, the main thing to think about is the graphice card. yoiu can have a crappy system with a highend graphics card and do just fine.