I don't know about you but when smoking an analog I never had to push a button and didn't want to do that when vaping. I decided to try an 808 not only because they were/are almost all automatic but the 2 piece design really appealed to me. I really have never looked back. I don't like big batts because again, most are manual and due to their size they are not really convenient for hands free vaping. I do have an 808 threaded auto ego sized batt but I hardly ever use it.
A lot of people only consider automatics for the reason you mentioned, but most people who give manuals a chance don't look back. No need for "primer" puffs is the big advantage. Press the button as you are bringing the PV up to your mouth and the coil will be nice and hot by the time you start drawing.
With cigarettes, you need to ash between draws. With manual PV's you need to press a button while drawing. It balances out. Besides, you'll quickly forget about the button and will press it without even thinking after a couple of days anyways.
This whole industry seems to be heading in the "mine is bigger than yours" direction and I think that is the wrong direction. I want something that will last me all day and that I can keep in my pocket without someone asking if I am happy to see them.
With cigarettes, you need to carry the pack (maybe even more than 1 pack based on your habit) and a lighter. Even my iTaste MVP box mod is quite a bit smaller than a pack of cigarettes. My iTaste VV (slightly larger than an Ego) is minuscule compared to a pack of cigarettes and a lighter.
I too have no interest in the huge, lightsaber-sized mods out there (except maybe for home use only), but I'm always a bit confused when I hear someone say an Ego is too big when it is actually so much smaller than what they were carrying before.
My advice is to give larger manual PV's a go. Most likely after giving them an honest try you'll wonder why you didn't switch earlier.