I genuinely find shooting with manual lenses and fully manual exposure quicker and easier in most cases. Most of my photos are zone focused, and I prefer to just choose my exposure by eye or with an incident meter and then leave it there until the light changes. Which means that I'll often use exactly the same exposure for hours at a time, just using reciprocal aperture/shutter combinations based on the same exposure value.
I really do personally find autofocus and autoexposure more complicated and more difficult. The automated approach forces me to constantly monitor the decisions the camera is making so that I can over-ride it when I need to. And it seems to need over-riding for just about every shot. I end up feeling like the gear is fighting me and getting in the way, and I get no pleasure from shooting at all.
No doubt if I was into sports or wildlife photography I'd feel very differently and I'd want the latest, fastest autofocus every time. And I'm certainly not trying to convince people who prefer automation that they are wrong and I'm right. There isn't any wrong or right, and we're each free to do things in the way that gives us the most personal enjoyment.