The jump from the 2015 build to the current version of Photoshop is massive. By using a legitimate Creative Cloud subscription, you gain access to:
This is significantly cheaper than the full "All Apps" plan and includes Photoshop and Lightroom.
You lose access to critical security patches and performance improvements provided by Adobe. This leaves your machine vulnerable to exploits discovered long after 2015. Why Move to the Creative Cloud?
Use AI to colorize old photos, change expressions, or smooth skin in seconds. Better Alternatives
A free, web-based editor that mirrors the Photoshop interface and functionality almost perfectly.