Is 32GB worth it for a Docker home server?

Yes, 32GB is usually worth it if you’re running more than a handful of containers. While a few small containers can run on 16GB, adding databases, media servers, or data-processing containers fills memory fast. Running out of RAM causes swapping to disk, making the server sluggish. With current RAM prices, 32GB gives you headroom to avoid that and keep your server snappy for years without tinkering.