There was a time when I did the 360 to check if all the plane's parts were still where they should be. Now when I do the walk around, it's to say "hi" "how's it going" to the loaders, gas man, security guards, lavatory truck guy, etc. In case of a post accident/incident investigation, these are the guys they'll ask if you did an inspection. CYA. That's what regulations has done to our profession.