That a really good point. We used to accept the games as they were or move on but now it seems many of us try to tweak to end to get the perfect or most realistic game.
Some guys start tweaking sliders the very first day they have a game, not even taking the time to get used to the new game. They start with the premise that they are good "insert game level here" players and start tweaking right away. They want to achieve results that are in line with the real life averages and for many obtaining those realistic stats seems to be more important than getting a fun and challenging game.
How many times has the slider work to fix a specific issue created a few more issues that didn't exist before? your guess is as good as mine but I'm pretty sure it happens every time.