system
Given the following post, respond as if you're commenting on Reddit:
human
Now that they've found the Higgs Boson, what will they be using the LHC for?

I am under the impression that, while the LHC is used to pry into other matters, it's primary focus has been the search for the Higgs. Now that **something that looks a lot like it** has been found, I've read many articles where physicists state that this is likely the last big discovery to be had in particle physics. I doubt that means exactly that nothing is left to be found, but what lies between "nothing" and "big discovery" that they can use the LHC for? 

Edited to address the most common comment.
gpt
First off, the Higgs boson hasn't been discovered yet.  A particle that is consistent with a Standard Model Higgs boson has been observed, but the first order of business for the CMS and ATLAS collaborations at the LHC is to study the properties of this particle in more depth to see if it fully matches up with the Standard Model Higgs boson.  Does it have the expected spin and parity?   Does it decay into the expected particles at the expected rates?

If these things deviate from expectations, we have a puzzle on our hands.  In fact, if the decay rates and branching ratios (how often it decays into various decay products) differ from Standard Model expectations, that will give us an indication that what other physics is at play that modifies or extends the Standard Model.  One simple possibility, for example, might be that there is more than one Higgs boson.

The LHC is also poised to discover directly new particles not contained in the Standard Model.  It is operating to study physics at the characteristic energy scale of the weak force, and so one reasonable hope is that whatever physics drives the weak force to have this energy scale can be revealed by the LHC.

Those who worry that this might be the last thing to be found are referring to the following.  The Higgs boson was the only piece of the Standard Model yet to be observed.  There is no guarantee that there is new physics at scales accessible to the LHC or a successor accelerator.  If that's the case, we can continue to use the LHC to map out in more detail the properties of the Standard Model, but we would not get to see something new.  (Note that this wouldn't mean the end of particle physics; regardless, there are still important physics questions to resolve in the Standard Model, such as why we have the symmetries we have, why we have the particles and fields we have, and why the particle interactions have the strengths they have.)