I was a great UNIX/IRIX/Linux sysadmin. Fantastic. Until I got to a corporation with a structure so large that I wasn't even allowed near the VMware vSphere or the physical hardware itself ((servers locked in the basement)), I was only allowed to install RHEL from images onto other images and keep them patched with Satellite and Ansible. But, disconnected from the front end (vmware) and the real tangible back end (physical hardware), I found myself hating the work and I stopped doing it. I found it quite insulting, to be "just the LINUX guy" cog in the machine.
Then become the VMWare guy (or whatever tech you see coming at you to take over your world). This industry changes quickly, expecting to be a skilled sysadmin on the same platform for more than a decade is a career killer.
