What do you mean by cannot stop doing research? I certainly haven't discovered anything new, but I love learning new things, reading about ideas, coming up with them.
1) There's a kind of "hard" learning you're learning a fixed, structured way from a textbook.
2) There's a kind of "soft" learning which is transmission of knowledge, which happens a lot more face to face when you're working together.
3) Then there's a kind of research learning, where you're doing something new, usually with collaborators.
The second and third are really best done in certain environments like research or good companies