I've actually only shaven once in my life, a few weeks ago. My facial hair was growing so slow, and I figured that if I shaved it, it would grow faster. And it actually did, and some hair started to show in places I didn't see any visible facial hair before after a little while, which was super nice. Before that I trimmed my facial hair every now and then because I liked stubble.
I shave the very edge of my eyebrows because I don't like how far they grow out and feel it makes me look a less attractive. Grows back rather slowly too, which is nice. And obviously I shave the hairs that start to form a unibrow when they show their ugly head.
About once a week I manage my man parts.
Side note. I'm thinking about shaving my arm hair, because it kind of looks like I don't have any when I look at my arm, and I don't like that. I want it to be a little thicker than it is now. But I'm hesitant.