Today, with digital photography having replaced film photography, and the use of the Internet becoming ubiquitous, for most people, fewer and fewer prints or slides are being made, even at home. Photos are now viewed and shared in online galleries, and often by email, messaging, and cell phone transmission.
While some make their galleries private, most users never utilize their gallery's privacy and security tools, so their photos are available for anyone in the world to see, and if desired, copied for themselves.
These days, photos are often viewed by unintended gallery visitors and many are appropriated without the photographer's permission, sometimes for stolen profits.
Should you protect your photographs? Absolutely!