Over the years I’ve put together a system that requires just a push of a button to scan and store all my documents.
Of course it depends, but you may be able to get that old monitor working with a new computer.
Windows has the option of numerous types of software and hardware being installed. That leads to a complicated situation for standby to deal with. It easily goes wrong.
Windows update can update more things than just Windows operating system. So keeping it up to date is still a good idea.
You may not need a computer… but don’t think that moving to a tablet is going to be the end to all hassles.
There just isn’t a best… and knowing that will (hopefully) lead you in the direction of safe internet practices.