PC Interesting Questions Swap - USA #5

You will be partnered up with 1 person to send a naked, written & stamped postcard. Postcard is SENDERS CHOICE but bonus if you can make it fit the question theme :)

This weeks question is: What common misconception did you believe for the longest time before realizing it was false?

For example: For the longest time I believed that having a fever/high temperature was really bad for you, but I recently learned that it can actually be good for you as that means your body is fighting off whatever infection you currently have!

You may add more than one if you'd like (and if you have enough room!)

New/unrated users are allowed but please have a filled out profile, not just a few lines. I will ban any accounts that look like bots or have no profile