"Bert Coules" wrote in message
o.uk...
Fred wrote:

I have absolutely no intention of "upgrading" to a later version. Ever!

You dont always have a choice on that.

I'm puzzled: what circumstances could force me to change?

The OS you use is no longer supported and doesnt
get security updates anymore so you have to update
the OS and the updated OS wont run that app.

Or something else you decide you would
like to use wont run on your older OS.