What if the LHC and further colliders can not find anything beyond the Standard Model?
- LHC can not find anything beyond the SM-Higgs-like boson.
- VLHC, the linear collider or the muon collider can not find anything beyond the SM-Higgs-like boson.
- The 100TeV-1000TeV collider, likely in China, can not find anything beyond the SM-Higgs-like boson.
Then, what to do if no hints of dark matter particles, the axion or alike, new particles, superstrings, extra dimensions or anything beyond the SM-Higgs-like boson?
What if the nightmare scenario does happen? I mean the following: even if the SM holds to a very high energy, we should guess other ways to test its validity outside the collider realm or Dark Matter detectors. So, I believe it is NOT an opinion based question to ask what to do if the SM is unbreakable and nothing new arises in the next colliders.
Remark: I don't understand WHY you are closed this question. It is NOT an opinion based issue to point out WAYS to direct physics IF collider physics can not provide answers to fundamental physics questions like why the Higgs has a 125GeV mass? What is dark matter/dark energy? If the responses to some of these and others is not accessible with colliders, we should guess other ways, and that is NOT opinion based answers!