By virtue of the industry we work in, we're quite keen to keep ourselves up-to-date. That obviously means ensuring our operating systems, anti-virus and other software are the latest versions. Updating will often add new features and fix problems, whether obvious or behind the scenes. Generally, it's a good idea, although not without exception.
Most modern phones also run operating systems, likely iOS or Android. One of our programmers recently updated his phone to the latest Android version, only to find it slow to a crawl and become dangerously close to unusable. A little research established he was not alone and it took about a month for a fix to be issued. The problem traced back to the phone manufacturer rather than Google but it was a frustrating few weeks.
So regular updating is valuable, but it's often worth not being in the very first wave of up-takers. Waiting for any early reports of problems may save you a lot of difficulties in the long run.