Why did they bother developing Fritzing at all? Why don't we just use real breadboard instead? The advantages of using a computer should be obvious; I covered them in highschool IT classes.
Incidentally, the problem is not that the stripboards are too small (they can in fact be set to any custom size). The problem is that the components are so large that they occlude each other regardless of the size of the stripboard, perfboard or breadboard.