Artix Install - 7.5 years!
It has been 7.5 years for the Artix install on my main workstation. The hardware changed in between, the installed Artix is still the same. This shows you how stable a rolling distro can be. Start of the Calamares.log on my system:
2018-01-30 - 01:42:31 [1]: Using Calamares settings file at "/etc/calamares/settings.conf"
2018-01-30 - 01:42:31 [1]: Using Calamares branding file at "/usr/share/calamares/branding/artix/branding.desc"
2018-01-30 - 01:42:31 [1]: WARNING: the selected branding component does not ship translations.
2018-01-30 - 01:42:31 [1]: Loaded branding component "artix"
2018-01-30 - 01:42:31 [1]: STARTUP: initQmlPath, initSettings, initBranding done
2018-01-30 - 01:42:31 [1]: STARTUP: initModuleManager: module init started
2018-01-30 - 01:42:31 [1]: STARTUP: initModuleManager: all modules init done
2018-01-30 - 01:42:32 [1]: STARTUP: initJobQueue done
2018-01-30 - 01:42:32 [1]: Available size QSize(1920, 1048)
2018-01-30 - 01:42:32 [1]: Proposed window size: 1024 540
2018-01-30 - 01:42:32 [1]: STARTUP: CalamaresWindow created; loadModules started
2018-01-30 - 01:42:32 [1]: Initial locale "en_US"
2018-01-30 - 01:42:32 [8]: Translation: Calamares: Using system locale: "en_US"
2018-01-30 - 01:42:32 [1]: Welcome string false "Artix Linux \"rolling\""
2018-01-30 - 01:42:32 [1]: ViewModule "welcome@welcome" loading complete.
To be really honest, I do frequent Clonezilla images of my "/" and "/boot/efi" partitions before updating the system and I had to roll back a few times. Other than that, most stable Linux version I have ever used.