[William McKinley]

No, that is not the way it is supposed to work. The practicality and suitability of laws is only supposed to be the purvey of the legislature (in conjunction with the Presidential veto authority on the Federal level).

The judiciary is merely supposed to ensure that the constraints on the legislature as described in the Constitution are being adhered to. Nothing more, nothing less.

[discostu]

But because of things like the 14th the courts have to decide on the practicality and suitability also. If a law cannot be equally applied because of the terms used or the thing being legislated (like the virtual kiddie porn laws got killed because nobody could manage to actually define virtual kiddie porn in a consistent manner) then they have to strike it down.