Kind of sad, and it has nothing to do with the capability of my 2019 iMac nor my interest in Linux. It's more that my university has made it more and more difficult to use it as my main machine. That's because it now refuses to connect Thunderbird to my Trent email account. Previously, I was using a paid Thunderbird add on called Owl to connect. But a few months ago, it wouldn't connect without a security code that I get on my phone, and now it won't connect altogether. I contacted Trent IT to ask them to make an exception, and they refused. Trent came under the spell of Microsoft about 10 or 15 years ago, and everything is now MS with them. I am able to connect MS Outlook (Mac or PC) to my mail account directly, so it is now easier to run a Mac than Linux. Also, they have now removed free local Microsoft Office 365 as a perk to faculty and staff, but that doesn't affect my using Linux because I can run Office 2010 via Crossover. I have tried several other mail programs on Ubuntu to gain access to my Trent account to no avail. Maybe my best answer is to stop using my Trent account, but so many people have my contact as that account and it would be difficult to notify everyone currently using my Trent mail account to contact me elsewhere. I'm still thinking this out and would welcome suggestions.