Earlier quoted context omitted.
I don't know if everyone is this way, but at 50 I am losing a little of the starry-eyed excitement. I've seen a lot of the same ideas come around again and again as a new great thing. And yet the pace of change is so fast, if you try to stay current you feel like you never really become an expert in anything. You get jaded. If and when I "retire" I would not see myself not working, but I do think I might do somthing…
There are a lot of unsolved problems in the world, and computers are a great place to explore their potential solutions. I don't really understand this "same ideas come around again and again", because maybe that means you're not properly keeping up with the state of the art. Maybe you should broaden your horizons?
I think that poster's point about the same ideas coming round again and again was that in some areas of technology "keeping up with the state of the art" is just a case of re-learning how to do something that you already understand and know how to do, but in a way that is now structured differently. Broadening your horizons can (in some cases) end up in you seeing the underlying same-ness in a lot of things.