I can accept getting heart disease—maybe it was my fault?—much more readily that being actively, senselessly, killed by someone else. Terrorists know this too, which is why definitionally terrorism is meant to induce fear by way of its unpredictability.

You wrote "security theater" to imply that we shouldn't attempt to address terrorism and school shootings because they don't kill enough people. I think that we ought to fund research into good, effective, ways to reduce gun violence _because_ it's something that we don't control ourselves.