After doing an oil change? Do ya dump in the reccomended amount of oil, put the cap on, slam the hood down and takeoff? Or do you check to make sure it reads right on the dipschtick?
If you are changing your own oil...of course you check.
The real question is how many check at every fill up? I'm guessing not many as it's rare to see an open hood at a gas station.
Of course I wonder if modern engines have fewer leaks. I recall when younger lots of stories of people burning up an engine because it lost oil...haven't heard any similar stories in years.