Yes, do it. If for nothing else the security patches. But it is stable, and if you have idevices, the handoff/continuity features work quite well.
I do not have a “smart” cell phone, just the basic slider. I also have a small digital camera. Is that what you mean by “I-devices”? My present system works well with the digital camera, in that I can take photos off the camera via cable and put them online.