Hi, I have a 2015 15" Macbook Pro Retina, upgraded the OS several times and now with Mojave. It frequently asks me to upgrade to Catalina. I am comfortable with all the apps and programs that I have and use, regularly back up with Time Machine and Super Duper, use CleanMyMac to keep it in good working order etc. I always download security updates. Is there any good reason why I should upgrade to Catalina (or Big Sur when it comes out) and have to buy 64 bit versions of some of my programs that currently work fine, and go through yet another learning curve to use the laptop correctly?
Richard
Richard