system
A chat on subreddit /r/pcmasterrace
human
depends on the game.  If all you play is FPS games, 32GB is overkill.  If you play sim games like City Skylines, 32 GB is kinda bare minimum.  I remember when Skylines first came out, and I played on 8GB or RAM... the game was pretty much unplayable after about 30,000 population.  I had a city with over a million people and it would take 15 mins to load the map, and once in, if I didn't crash, I would average 3-5 fps.
gpt
Star citizen minimum says 16gb but your fps will double with 32. Crazy. Also if your ram is too fast the game just stops getting better, kinda like diminished returns.