First, there is no reason to purchase a Chromebook. You can convert any PC to run ChromeOS Flex.
https://chromeenterprise.google/os/chromeosflex/
Create a USB stick with the Chrome image and boot from it on your PC. You can test drive all of it from the USB stick. If you decide you like it, its a quick install to the local hard drive.
This enables you to use an older "obsolete" PC, and it will run like new. My last PC was a 15 year old Celeron that performed fine. Only replaced it recently when it burned out. I purchased a used All-in-one 23" Dell with I5 processor with a small SSD (64gb is plenty) for $90. This PC will last another 10 years. Boot time to login is about 5 seconds.
The best advantage (besides performance) is everything you have is accessible from any PC that you login to. You can take the USB stick to any PC and login to your full desktop and access all your documents. If your PC burns up or is stolen, you can restore everything exactly how it was on another computer.
There is no worry about viruses, security patching, or any of the other maintenance headaches of Windows as it is all automatic. An occasional restart for the latest update will install new features.
It costs nothing to try and most people find it provides everything they need.