... as such going into all these ridiculous airports.
Why would an airport be ridiculous just because it's runway is only 5,000 or 4,000 or 3,000 ft long? These "ridiculous airports" as you call them are the reason why quite a few among us have their job: The only reason for many companies and private owners to buy and maintain their aeroplane (instead of travelling first class on the airline for a fraction of the cost) are those small regional airports.
But the last time I looked in the AFM doesn't take account of visbility, whether it's at night , very windy, how long the crew have been on duty etc all these things can make the approach tricker then say on a cavok day with nil or little wind, but if you are within limits its all legal !!
I have some colleagues who think exactly like this and are happy that for commercial operations someone gave them a big safety margin. That's perfectly OK. But this is also the reason why "short field experience required" is part of that job description and only people with that kind of experience and/or boldness to really go to the legal limits must apply.