I’m glad I was a teenager and young adult at a time when we didn’t have cell phones with cameras and video recorders. I’m sure that we were just as stupid and foolish as the current generation, but very few people had the means or motivation to take nude pictures, or record themselves having sex. The best way to avoid having embarrassing nude pictures or videos of yourself posted for the public to see is to not have them taken in the first place.
You're not the only one. Images and video are great for some things, others should be part of our memory only. ;-)