... the double slit experiment [makes] me angry.

I think if the conclusion of the double slit experiment doesn't make you a little upset, you're not really paying attention to the implications.

I think Wheeler's delayed-choice experiment, with all its variations, shows a particular obsession with trying to get a definite answer from the universe.

The fact that it is possible to decide whether a wave or particle feature manifests itself long after—and even space-like separated from—the measurement teaches us that we should not have any naive realistic picture for interpreting quantum phenomena. Any explanation of what goes on in a specific individual observation of one photon has to take into account the whole experimental apparatus of the complete quantum state consisting of both photons, and it can only make sense after all information concerning complementary variables has been recorded. Our results demonstrate that the viewpoint that the system photon behaves either definitely as a wave or definitely as a particle would require faster-than-light communication. Because this would be in strong tension with the special theory of relativity, we believe that such a viewpoint should be given up entirely.

The universe we inhabit is a goofy, nonsensical place that frustrates our attempts to comprehend it.