I think I would be able to take a reasonable guess at how many and it's not a very big number.
The convenience of human existence at the moment is that you can make a number of mistakes every day and it doesn't lower the chances of your survival, your ability to leave offspring, and even can't hurt your self-esteem at all.
No problem. I wouldn't like to be at an event organized by someone who looks at me with disgust for whatever reason.
im 38 years old, never seen or heard of anyone outside of maybe a particular religious group(maybe mormons?) doing something like this.