I'm thinking about doing a standard "dirty" upgrade on my 2017 i5 Macbook 12 from Catalina to whatever is current, Big Sur I guess. I'm concerned about, of course, battery life and performance. I do NOT want to do a clean install. I'm too old for that stuff any more, and don't feel like spending a day or two of my life putting everything back into place.
Maybe I should just stay where I am. After all, my 2011 MBA is running fine on whatever the last update was for that, and after all these years I think security updates are overrated, especially since whenever a truly serious security issue comes to light Apple typically releases a security update even for "unsupported" devices anyway.
Any opinions?