Comment by Lex-2008

not OP, but for some it might be availability of latest versions packages (say, you've heard about new major version of Bash or Vim being released today, and wondering how soon it might be available in your distro packages), and, as someone else mentioned, less update stress due to lack of "major version bumps" - just remember to subscribe to https://archlinux.org/news/ and watch out for entries requiring "manual intervention".