why do people...

Perhaps they are checking the consistency (which can indicate how sick they are) or ensuring there is no blood.

Or maybe they are the kind of person who ate boogers as a kid and must make a conscious decision not to eat what is in the tissue.

Squirbel is right. It is like when you wipe, you have too look too see if you’re clean. Most people don’t like to admit it, but that is just the way it is.

LOL. Funny. I was sort of being silly.

you can tell a lot by your snot. yellow snot means a bacterial infection. green means a viral infection.

I get a lot of bloody noses so sometimes its too check and see if i have a bloody nose. especially when i have a cold.