Maybe its irrational, but kind of hope they don't find it. It's almost gratifying, definitely exhilarating, to know that particle physics is still a fresh frontier with plenty of territory to be discovered. Supersymmetric particles seem to be unlikely too. It seems like we're almost back at the drawing board.
So if it turns out that it doesn't exist, where do we go from here? What are the alternative theories? It's been a while since I went into particle physics at all deeply, so I don't know all the leading theories and their pros and cons.
Particle physics has been chugging along for thirty years without a major discovery. Everything fits the Standard Model to a depressing degree. The worst-case scenario is that we'll actually find a Higgs boson in the expected range... and then nothing else.
It's perfectly possible that further interesting physics takes place at energy scales too far beyond the reach of any accelerator we can build in the next few hundred years.
So if it turns out that it doesn't exist, where do we go from here? What are the alternative theories? It's been a while since I went into particle physics at all deeply, so I don't know all the leading theories and their pros and cons.