Is there ever a good reason to use eval()?

Question

It seems to me that eval() is treated with the same disdain that goto is. And by eval, I mean a function for executing a string as code, as seen in

Answer 1

For debugging/testing an idea before implementing it the proper way.

For instance, you're making a toy calculator, and you want to work on the gui first, so you just use eval to do the "back-end" work in the background. Later, you come back to the back-end, scratch eval, and write a proper expression parser.