Not really idiotic.
On the keyboard, if you had no music in front of you, you would not be able to tell the difference between a piece in C# and one in Db. They are the same notes, but spelled differently on a page
When I look at the score, however, the sharps look more menacing than the flats. This, for some odd reason, triggers a different feeling than if I were to see the flats.
Incidentally, there IS a difference in them when you are talking abut other instruments, i.e. strings, woodwinds, that are not tuned to equal temprament.
Also incidentally, I have never come across a piece in C# major that did not look and feel agitated.
Phil
Phil