System Data is too big
This System Data is from late iMac 2015, so basically 10 years. As you can see, it takes up around 15% of my storage.
I want to buy a laptop with 256 GB. Since it's not possible to delete the System Data, how do I know that the 256 GB will be enough for storage, as the size of System Data seems unpredictable and you can't just delete at least some of it.
iMac 27″, macOS 12.6