Pretty similar here.
First time I saw a CNC mill run I was immediately hooked. I used to work as a field service tech for a CNC machine tool distributor and I can honestly say that I absolutely loved the work. You drop into some random factory, spend between 3hrs and a week fixing it and then probably never see the exact same issue again. It's mentally engaging but almost never tedious or repetitive. You can get stuck working late or even spending a night out of town with almost no notice but, I like things a bit unstructured so for me that wasn't a big deal.
Also, I'm problematically introverted so for me the field service gig was perfect. I got to work alone most of the time but I was also forced to interact with complete or relative strangers virtually every day which is good for me because if I can avoid people as much as I'd like, I get a little weird.