Earlier quoted context omitted.
8GB is absolutely fine for most people, but it is an expensive upgrade.
In my experience with family members who have 8G laptops, they are not fine. Even my mother who just uses a web browser, mail.app and occasinally Photos is not fine with 8G. Her MacBook Pro regularly ground to a halt. I replaced it with a used model that was almost exactly the same except that it has 16G and now she is fine.
There's absolutely no way anyone with that workload is hitting RAM limits.