I upgraded my office computer, without researching it first, to Catalina. Then I found out that I couldn't use Windows or Photoshop. There may be other older programs that don't work and, here's the catch, you have to buy the new products whereas they originally came free with the Mac.

So, I am just using Pages because I was never a Windows person anyway.

There are some other glitches, also. I am not going to upgrade my home Mac because of this. You can un-install Catalina but it requires backing up everything and wiping your hard drive clean and starting from the back up.

Too much crap for me.