You Don't Always Haff to Finesse
Much as I love finessing and strongly advocate taking your natural finesses, within the odds, if you need them, I probably hate taking unnecessary finesses, or taking non-finesses even more. You don't want to take finesses if you can get rid of a loser in another way, and beyond that, you don't want to take non-finesses, or pseudo-finesses, by which I mean something like this: Declarer has a one-way finesse against a queen: A J 5 in one hand opposite K 4 3. Declarer goes to the A and comes back with the J, ensuring himself of a loser regardless of where the Q lies. Yes, I realize that there's a bit of a contradiction including "non-finesses" among "misguided finesses" but I hope the reader will understand the shorthand.
Below are links to such situations. And what costs declarers more, taking too few or too many finesses? I would have to give the nod to the former. But the latter pops up with disturbing regularity.