I don't disagree with you. But it's not a perfect world. We all know that if we say "can't do it" in the end, we're more likely to be "punished" , particularly when other folks are "making it in." (Southwest 1418, turn right heading 120, expect vectors for another approach. You're now number 23 for the runway...")

Right or wrong, any pilot that flies to these airports knows about the various pressures that are put on them (by company, ATC, or themselves personally). That said, every crew that's flying should know where the line is and draw it. (The tough thing is there is no "line", but instead a blurred set of constantly changing conditions at any given time.)

At the end of the day, there are more than one safety cultures that need to be addressed, and this accident goes well beyond the cockpit of that 737 and Southwest's procedures and training for tailwind ops, contaminated runways and reduced performance.