I'm using 16GB (and have been for almost 3 years) and I have still yet to see the "running out of ram" message since i upgraded, and yes, I am a heavy ram user, I always have 10+ tabs open in chrome in 3 - 4 different sessions while gaming.
With other programs like Rianmeter, Rusty (server rcon tool), net limiter, other game clients, spotify, teamspeak, discord, file explorer (always good to have one of those open and handy) and about 5 other programs.
I still think 16GB is really good. 32GB is for those who actually need to use more than 16GB worth of ram for an edit or something.