Is 32GB RAM worth it for 4K video editing?

Yes. 16GB works for simple timelines with proxies, but once you add color grades, stabilization, multiple 4K streams, or heavy effects, you’ll hit the swapfile and your timeline becomes a slideshow. 32GB is the actual floor for comfortable 4K work in DaVinci Resolve or Premiere Pro — it’s where the software stops fighting you. If your motherboard can take it, do it now.