Why? Because Adobe Photoshop CS3 (Creative Suite 3) is widely regarded as the last "lightweight" professional version of Photoshop. It runs smoothly on old laptops, doesn't require a subscription, and for many, represents the golden age of digital imaging.
Adobe stopped patching CS3 over a decade ago. Using it to open files from the internet can expose your system to unpatched security vulnerabilities. Top Free Alternatives to Photoshop CS3 adobe photoshop cs3 version 100 free
and is no longer supported or sold by Adobe. While you may see "free download" links on third-party sites, these are often illegal pirated versions or potentially dangerous malware. Here is the current status of Photoshop CS3: Activation Servers are Offline doesn't require a subscription