If you can, try reading The Shallows by Nicholas Carr. It's not perfect, but it will get you thinking about how and why your attention span got to be the way it is. It will also give you hope, because you'll realize that it's totally within your power to change it (and rather quickly, too).
Your message started with "What wouldn't I give to have such attention span!", and it turns out that you don't need to give all that much. Getting started is difficult, though.
If you do start down this path, consider reading Deep Work by Cal Newport to give you some ideas about how you can use the focus and concentration abilities you're building. Again, it's not perfect, but if you take the book as a list of suggestions rather than a strict prescription of what you should do, you'll probably find that you can adapt its lessons to make your life better.
Your message started with "What wouldn't I give to have such attention span!", and it turns out that you don't need to give all that much. Getting started is difficult, though.
If you do start down this path, consider reading Deep Work by Cal Newport to give you some ideas about how you can use the focus and concentration abilities you're building. Again, it's not perfect, but if you take the book as a list of suggestions rather than a strict prescription of what you should do, you'll probably find that you can adapt its lessons to make your life better.