Yes - I used to program in C++, and left it for another job. 2 years later, when looking for other opportunities, I realized how much of the small details in C+

Yes - I used to program in C++, and left it for another job. 2 years later, when looking for other opportunities, I realized how much of the small details in C++ I'd forgotten, and didn't want to go back to all those minutiae unless it paid more. It's a real relief to drop that cognitive load.