What’s weird about being in IT infrastructure is that it’s one of the few roles where you have to know how to do your own job, but also have to know how to do a significant portion of many other jobs, too. Are there any other roles like that? Maybe forensic (but only forensic) accounting is the other one I can think of.
If that sounds arrogant, try the work that I do for a few years. You’ll see. I don’t of course mean being a complete expert in other fields, but we infrastructure people often have to know enough to attempt to figure out pretty specifically what the other person is doing in their role, and then making technology work as they expect it — often without them being able to explain anything particularly useful. (How do people do their jobs this way? I think people operate mostly on auto-pilot a lot more than I do.)