Agile Coach / Scrum Master chiming in - I switched from an engineering position to this more people-centric role, and completely agree with you.

What I find fascinating about this is how predictable people become once you know the different personalities and their nuances. It helps tremendously to also be interested in getting to know people. And yes, you will encounter people that are disruptive. Usually, and I can only speak for my environment, the team itself is quite good at handling that. I just need to give them room and provide a setting where they can talk about the issues at hand on a constructive base.

That's why I love my job, and it may sound weird - but I'm the guy who can ask all the obvious questions that come to mind and others don't dare to ask. I love that I can build myself a toolbox to use in different (and difficult) situations. And I love to see my team succeed on the one hand, and learn from failure on the other.