There is a much more powerful particle accelerator sitting in the center of the Milky Way galaxy
It's been running for probably 10 billion years or so and we're
still here, so I guess it's okay now to have the LHC.
By the way, the Super Collider that was going to be built in Texas
(and they did complete a number of miles of tunnel excavation at
a cost of $2 billion before Congress cancelled it) was going to be
40 kilometers around, whereas the LHC is a measely 27 kilometers
in circumference.
Imagine what we could have learned with the SSC....
And no, that one wouldn't have blown us all up, either. Human and
Earth scales compared to the rest of the Universe are too puny to
even mention.