Left a Block of Cheddar Cheese on the KItchen Counter All Day

People are often on one side or the other on this topic.
I grew up with parents that did not worry about stuff like this. We climbed trees, rode bikes, jumped them over garbage cans, etc...Food was left in the pan on the stove overnight and we picked from it the next morning. Nobody got sick from it. As kids, we rarely got sick anyway.
The Wife?
Maybe because her parents had a bit more money, they were a bit more careful in the upbringing. Her parents were more cautious about everything.
Today, I work construction and figure that with as much dirt and sawdust that I eat every day, a little fuzz on food will not hurt. I rarely get colds. Not sure if that is due to a strong immunity build-up from my upbringing or genetics. Regardless, I continue to eat food that has been left out.