Lucky Thirteenth?

The name of the latest Macintosh operating system has changed each year for a good number of years now, but putting those changes into practice by upgrading my computer's software always seems to take a lot of personal nerving. I suppose it's summed up by the uneasy feeling online sites that would seem at first glance to be about working better with macOS have dark undercurrents in their comment sections of "never upgrade under any circumstances." It might be nothing more than my cowardly imagination fixing that in my mind, but I admit it can affect me.
( With a special appearance from OS X 10.4 'Tiger' )