I'm very much in the habit of checking my chamber to verify it's condition.
I realize that packing an unloaded gun around all day has never happened to so many on the board who hand out advice, but I check my chamber on a regular basis.
And yes, I use a simple method that can easily and quickly feel the round in the dark.
If others feel that they couldn't possibly have, somehow, forgot to make their pistol ready and that "it's always loaded-no need to check", than that's their call.
I suspect such individuals would jump out of air planes without checking their parachute harness or static line, because they're always ready to go. Or drive off without checking their trailer hitch, 'cause it was ok last time they used it.
In addition, for those who dry fire a lot with snap caps, a visual check before you leave the house is a good idea, since an A-Zoom in the chamber wouldn't be of much use and just feeling the round wouldn't detect it.