Can you elaborate?
I don't have a MacBook (but have been considering getting one), but I can't imagine that you need more that 16 GB of RAM to run a browser, no matter how memory-hungry Chrome might be.
Is this really an issue? Maybe you're trolling?
I don't understand how adding more memory is going to fix your performance. It's not like you're spinning up a HDD to swap.
What do you regret?