Don't be scared. I'm rarely over 32GB of use. I mainly have it for when I need to do some virtualization/lab work.

Even when I do labs though, I usually debate whether to run them local or put them on my home server with 256GB of RAM.

Edit to add: since I have the memory, I'd rather that chrome uses it for useful stuff. No point in having the memory if it's just going to sit vacant most of the time. I already bought the RAM, so I might as well use it.