Any reason to keep adobe flash player

Even though Adobe Flash player is at EOL, is there any reason to keep a version on my iMac? I'm wondering about old sites that still use adobe flash player. e.g. we recently had family pictures taken and the photographer used software that uses adobe flash player to show us our pictures. I won't be able to reference them if I remove it? Is there a disadvantage to keeping it on our computers?

Thanks in advance

Shan