I don't fail to see anything. It's been a fallen world since man's fall from grace. Yet we've survived and prospered without 'security' in our churches as we seem to require now. Does this mean man is more evil today than in the past? I think not. OTOH, have we in our religious organizations changed our focus on what God's mission to us truly is?
He said to them, "But now if you have a purse, take it, and also a bag; and if you don't have a sword, sell your cloak and buy one.
God's not talking about making a fashion statement, here. He's calling on us to see to our safety, likely because He knew we would be the target of attacks.