I guess everyone's setup is different. For our LEAF, the EVSE is right next to the garage door. I park, get out of the car, walk towards the garage door, grab the charging plug off its hook, turn and click it in. There's no walking and it's a one-hand job since you can flip the cover with the end of the j-plug. No more than 5 seconds of my time, and in the privacy and comfort of my own garage. No inclement weather, no waiting, no fumes, no traffic noises whizzing past. No advertisements blaring at me (the captive audience). No recalcitrant pumps or card-readers. No displays that are unreadable from vandalism or boneheaded employees scrubbing them with steel wool. No broken receipt printers, no entering of zip codes, no "card declined see attendant". No $60 admission to this pageant.
Likewise, my total time involved in procuring gasoline was almost never the proverbial 5-minute pit-stop that so many folks imagine. There was always time diverting from my route, extra stop lights, stop signs, sometimes getting off the freeway and back on, etc… There was sometimes a wait. I can tell you that on those mornings where I suddenly realized I HAD to get gas, it never seemed to make me *just* 5 minutes late.
To me, there simply isn't a comparison. It doesn't even make sense to try to sum up the total time of my 5-second plug and unplug activities to compare "total time per year". Personal time just doesn't work like that; it's not a mathematic puzzle. A few seconds on the way in the door is simply a totally different world than going out of my way to stand in the cold rain at a dreary filling station and shovel money into the coffers of Exxon or BP. There is no equating these 2 different paradigms. And the "convenience" of getting a full tank every (x)00 miles quite simply does not compare to starting EACH DAY with a full tank and having the "fuel" magically deposited into your "tank" by angels while you sleep.