I don't need to know their exact stats, but I like (for example) having a system where you know a human's health ranges from 6 to 10, and a gun does at least 3 damage, so you can be pretty sure if you shoot him four times he's down. None of this, "Well, he's a 12th level accountant so he has 78 hp".

Maybe I mostly just dislike how vague HP is in D&D.

But it was probably mostly a GM issue.

I’m here to roleplay, not be told immediately whether or not I can take the dude.

I find it hard to roleplay when I don't know what is in the world. Things that are very different (high level stuff, low level stuff) getting basically the same description is distracting. In real life, you get a lot of information looking at someone.

Maybe I'm still just annoyed at that game where we were all 10th level and so were the basic ass soldiers.