Using old photoshop

My photoshop program is over ten years old. I keep using it but it no longer communicates with Adobe so I think it’s on the way out. I have the opportunity to get the new version, but I’m dithering. Is it worth it? Will I understand it? Has anyone got experience of it? Answers on a postcard please…. I guess I will have to bite the bullet because I do like my old version and I would like to keep using some form of it.